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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Talk%3A3213%3A_Dental_Formulas</id>
		<title>Talk:3213: Dental Formulas - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=Talk%3A3213%3A_Dental_Formulas"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;action=history"/>
		<updated>2026-04-14T11:26:40Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=409291&amp;oldid=prev</id>
		<title>EebstertheGreat at 15:07, 1 April 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=409291&amp;oldid=prev"/>
				<updated>2026-04-01T15:07:29Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:07, 1 April 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l16&quot; &gt;Line 16:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 16:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::I probably significantly overlap you, in locale and timeframe, so here's my take on that: When learning basic arithmatic (primary school level) I'd be using the notation × (and ÷, to go along with + and -), but by the time it came to algebra (in secondary level education) then dotted adjacency was preferable (as well as using a &amp;quot;)(&amp;quot; writing style for the variable &amp;quot;x&amp;quot;, to be extra-sure it's not mistaken as a multiplication). So you have the likes of &amp;quot;y = mx + c&amp;quot; or &amp;quot;y=ax² + bx + c&amp;quot;. And, by this point, the difference between {{w|cross product}} and {{w|dot product}} potentially become very important... Technically, the '1d vectors' that are plain numbers are multiplied in dot-product fashion to create the requisite scalar (i.e. also 1d) that you'd expect through all prior experiences of multiplication. And this continues into higher and further education levels.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::I probably significantly overlap you, in locale and timeframe, so here's my take on that: When learning basic arithmatic (primary school level) I'd be using the notation × (and ÷, to go along with + and -), but by the time it came to algebra (in secondary level education) then dotted adjacency was preferable (as well as using a &amp;quot;)(&amp;quot; writing style for the variable &amp;quot;x&amp;quot;, to be extra-sure it's not mistaken as a multiplication). So you have the likes of &amp;quot;y = mx + c&amp;quot; or &amp;quot;y=ax² + bx + c&amp;quot;. And, by this point, the difference between {{w|cross product}} and {{w|dot product}} potentially become very important... Technically, the '1d vectors' that are plain numbers are multiplied in dot-product fashion to create the requisite scalar (i.e. also 1d) that you'd expect through all prior experiences of multiplication. And this continues into higher and further education levels.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::If using the cross, at this level, it risks the impression that you are using the cross-product. If obeying ''its'' calculative rules, creates a result that is perpendicular (and anti-commutative, so dependent upon order applied) to the vectors supplied. Trying to apply a cross-product to single-values essentially tells you that they have zero angular difference between the two two (whether in the same of opposite directions) and no magnitude in the co-perpendicular direction (requiring 3d of vector-space, or more).&amp;#160; (And I hope I explained that right, and am not using my own understanding of the terminology in a way that doesn't match more standard uses of it. ;) ) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:26, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::If using the cross, at this level, it risks the impression that you are using the cross-product. If obeying ''its'' calculative rules, creates a result that is perpendicular (and anti-commutative, so dependent upon order applied) to the vectors supplied. Trying to apply a cross-product to single-values essentially tells you that they have zero angular difference between the two two (whether in the same of opposite directions) and no magnitude in the co-perpendicular direction (requiring 3d of vector-space, or more).&amp;#160; (And I hope I explained that right, and am not using my own understanding of the terminology in a way that doesn't match more standard uses of it. ;) ) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:26, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::Don't forget that India uses different rules for separating digits. Instead of separating every block of three digits with a &amp;quot;thousands separator,&amp;quot; it separates lakhs and crores and higher amounts like this: ab,cd,ef,ghi, where those letters represent digits. So for instance, 1 crore 50 lakh (i.e. 15 million) would be written 1,50,00,000. [[User:EebstertheGreat|EebstertheGreat]] ([[User talk:EebstertheGreat|talk]]) 15:07, 1 April 2026 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>EebstertheGreat</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=408037&amp;oldid=prev</id>
		<title>Commercialegg at 16:26, 12 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=408037&amp;oldid=prev"/>
				<updated>2026-03-12T16:26:52Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:26, 12 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l25&quot; &gt;Line 25:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 25:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:::PERRY the platypus?![[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 16:26, 12 March 2026 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Commercialegg</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407866&amp;oldid=prev</id>
		<title>42.book.addict at 04:56, 10 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407866&amp;oldid=prev"/>
				<updated>2026-03-10T04:56:35Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;col class=&quot;diff-content&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 04:56, 10 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l20&quot; &gt;Line 20:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 20:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:O.K., the IP address at the end of that sentence looked like a very scary set of teeth. {{unsigned ip|96.230.198.167|23:46, 9 March 2026}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:O.K., the IP address at the end of that sentence looked like a very scary set of teeth. {{unsigned ip|96.230.198.167|23:46, 9 March 2026 &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;(UTC)&lt;/ins&gt;}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>42.book.addict</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407864&amp;oldid=prev</id>
		<title>81.179.199.253: You[re no gummy-wonder yourself... ;)</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407864&amp;oldid=prev"/>
				<updated>2026-03-10T01:13:10Z</updated>
		
		<summary type="html">&lt;p&gt;You[re no gummy-wonder yourself... ;)&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 01:13, 10 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l20&quot; &gt;Line 20:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 20:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:O.K., the IP address at the end of that sentence looked like a very scary set of teeth.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:O.K., the IP address at the end of that sentence looked like a very scary set of teeth. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{unsigned ip|96.230.198.167|23:46, 9 March 2026}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>81.179.199.253</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407863&amp;oldid=prev</id>
		<title>96.230.198.167 at 23:46, 9 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407863&amp;oldid=prev"/>
				<updated>2026-03-09T23:46:38Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 23:46, 9 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l20&quot; &gt;Line 20:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 20:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Fun Fact: The {{w|São Tomé collared fruit bat}} is the only known mammal where the whole population has an asymmetrical dental formula. --[[Special:Contributions/134.102.219.31|134.102.219.31]] 18:51, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:O.K., the IP address at the end of that sentence looked like a very scary set of teeth.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>96.230.198.167</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407787&amp;oldid=prev</id>
		<title>81.179.199.253 at 21:28, 6 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407787&amp;oldid=prev"/>
				<updated>2026-03-06T21:28:03Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 21:28, 6 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I was taught, in the UK in the '80s, to use the '×' symbol. It seems that practically everybody else uses some sort of dot, or worse just stuffs the variables side by side and the multiplication is &amp;quot;assumed&amp;quot;. Hmm, and some people wonder why maths causes so much distress. [[Special:Contributions/2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E|2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E]] 19:29, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I was taught, in the UK in the '80s, to use the '×' symbol. It seems that practically everybody else uses some sort of dot, or worse just stuffs the variables side by side and the multiplication is &amp;quot;assumed&amp;quot;. Hmm, and some people wonder why maths causes so much distress. [[Special:Contributions/2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E|2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E]] 19:29, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::I probably significantly overlap you, in locale and timeframe, so here's my take on that: When learning basic arithmatic (primary school level) I'd be using the notation × (and ÷, to go along with + and -), but by the time it came to algebra (in secondary level education) then dotted adjacency was preferable (as well as using a &amp;quot;)(&amp;quot; writing style for the variable &amp;quot;x&amp;quot;, to be extra-sure it's not mistaken as a multiplication). So you have the likes of &amp;quot;y = mx + c&amp;quot; or &amp;quot;y=ax² + bx + c&amp;quot;. And, by this point, the difference between {{w|cross product}} and {{w|dot product}} potentially become very important... Technically, the '1d vectors' that are plain numbers are multiplied in dot-product fashion to create the requisite scalar (i.e. also 1d) that you'd expect through all prior experiences of multiplication.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::I probably significantly overlap you, in locale and timeframe, so here's my take on that: When learning basic arithmatic (primary school level) I'd be using the notation × (and ÷, to go along with + and -), but by the time it came to algebra (in secondary level education) then dotted adjacency was preferable (as well as using a &amp;quot;)(&amp;quot; writing style for the variable &amp;quot;x&amp;quot;, to be extra-sure it's not mistaken as a multiplication). So you have the likes of &amp;quot;y = mx + c&amp;quot; or &amp;quot;y=ax² + bx + c&amp;quot;. And, by this point, the difference between {{w|cross product}} and {{w|dot product}} potentially become very important... Technically, the '1d vectors' that are plain numbers are multiplied in dot-product fashion to create the requisite scalar (i.e. also 1d) that you'd expect through all prior experiences of multiplication&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. And this continues into higher and further education levels&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;The &lt;/del&gt;cross-product&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, if &lt;/del&gt;obeying ''&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;it's&lt;/del&gt;'' calculative rules, creates a result that is perpendicular (and anti-commutative, so dependent upon order applied) to the vectors supplied. Trying to apply a cross-product to single-values essentially tells you that they have zero angular difference between the two two (whether in the same of opposite directions) and no magnitude in the co-perpendicular direction (requiring 3d of vector-space, or more).&amp;#160; (And I hope I explained that right, and am not using my own understanding of the terminology in a way that doesn't match more standard uses of it. ;) ) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:26, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;::&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;If using the cross, at this level, it risks the impression that you are using the &lt;/ins&gt;cross-product&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. If &lt;/ins&gt;obeying ''&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;its&lt;/ins&gt;'' calculative rules, creates a result that is perpendicular (and anti-commutative, so dependent upon order applied) to the vectors supplied. Trying to apply a cross-product to single-values essentially tells you that they have zero angular difference between the two two (whether in the same of opposite directions) and no magnitude in the co-perpendicular direction (requiring 3d of vector-space, or more).&amp;#160; (And I hope I explained that right, and am not using my own understanding of the terminology in a way that doesn't match more standard uses of it. ;) ) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:26, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>81.179.199.253</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407786&amp;oldid=prev</id>
		<title>81.179.199.253 at 21:26, 6 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407786&amp;oldid=prev"/>
				<updated>2026-03-06T21:26:00Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 21:26, 6 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l14&quot; &gt;Line 14:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 14:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I was taught, in the UK in the '80s, to use the '×' symbol. It seems that practically everybody else uses some sort of dot, or worse just stuffs the variables side by side and the multiplication is &amp;quot;assumed&amp;quot;. Hmm, and some people wonder why maths causes so much distress. [[Special:Contributions/2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E|2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E]] 19:29, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I was taught, in the UK in the '80s, to use the '×' symbol. It seems that practically everybody else uses some sort of dot, or worse just stuffs the variables side by side and the multiplication is &amp;quot;assumed&amp;quot;. Hmm, and some people wonder why maths causes so much distress. [[Special:Contributions/2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E|2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E]] 19:29, 6 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::I probably significantly overlap you, in locale and timeframe, so here's my take on that: When learning basic arithmatic (primary school level) I'd be using the notation × (and ÷, to go along with + and -), but by the time it came to algebra (in secondary level education) then dotted adjacency was preferable (as well as using a &amp;quot;)(&amp;quot; writing style for the variable &amp;quot;x&amp;quot;, to be extra-sure it's not mistaken as a multiplication). So you have the likes of &amp;quot;y = mx + c&amp;quot; or &amp;quot;y=ax² + bx + c&amp;quot;. And, by this point, the difference between {{w|cross product}} and {{w|dot product}} potentially become very important... Technically, the '1d vectors' that are plain numbers are multiplied in dot-product fashion to create the requisite scalar (i.e. also 1d) that you'd expect through all prior experiences of multiplication.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::The cross-product, if obeying ''it's'' calculative rules, creates a result that is perpendicular (and anti-commutative, so dependent upon order applied) to the vectors supplied. Trying to apply a cross-product to single-values essentially tells you that they have zero angular difference between the two two (whether in the same of opposite directions) and no magnitude in the co-perpendicular direction (requiring 3d of vector-space, or more).&amp;#160; (And I hope I explained that right, and am not using my own understanding of the terminology in a way that doesn't match more standard uses of it. ;) ) [[Special:Contributions/81.179.199.253|81.179.199.253]] 21:26, 6 March 2026 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>81.179.199.253</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407782&amp;oldid=prev</id>
		<title>2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E: On using the '×' symbol.</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407782&amp;oldid=prev"/>
				<updated>2026-03-06T19:29:10Z</updated>
		
		<summary type="html">&lt;p&gt;On using the &amp;#039;×&amp;#039; symbol.&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 19:29, 6 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l13&quot; &gt;Line 13:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 13:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I didn't know it was called the interpunct but that was how I was taught to write decimal points at my UK school in the early sixties and how I still write them by hand.--[[Special:Contributions/2A00:23CC:D248:8901:30F4:4052:A4F7:386E|2A00:23CC:D248:8901:30F4:4052:A4F7:386E]] 09:36, 28 February 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:I didn't know it was called the interpunct but that was how I was taught to write decimal points at my UK school in the early sixties and how I still write them by hand.--[[Special:Contributions/2A00:23CC:D248:8901:30F4:4052:A4F7:386E|2A00:23CC:D248:8901:30F4:4052:A4F7:386E]] 09:36, 28 February 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:And some countries use interpuncts for multiplying scalars, baseline dots (interchangeably with spaces, but never both in a single number) for thousands, and commas as decimal symbol. There are languages that even include group separation ''after'' the latter, with a 4-digit final group iff the last digit is the 10&amp;lt;sup&amp;gt;-3''n''-1&amp;lt;/sup&amp;gt;s place (e. g. &amp;quot;3 863 387,274 479 0001&amp;quot; instead of &amp;quot;3 863 387,274 479 000 1&amp;quot;), even with several exceptions (e. g. rules like &amp;quot;4-digit numbers do not require formatting, '''unless they are in a table with longer numbers in the same column'''&amp;quot;). [[Special:Contributions/2001:4C4E:1C00:EB00:D063:D715:3937:44C6|2001:4C4E:1C00:EB00:D063:D715:3937:44C6]] 11:42, 1 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;:I was taught, in the UK in the '80s, to use the '×' symbol. It seems that practically everybody else uses some sort of dot, or worse just stuffs the variables side by side and the multiplication is &amp;quot;assumed&amp;quot;. Hmm, and some people wonder why maths causes so much distress. [[Special:Contributions/2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E|2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E]] 19:29, 6 March 2026 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;An unrelated note, I'm just curious, does any beast have more than 1 canine? or is the second number limited to the set {0, 1}? -- [[User:Malgond|Malgond]] ([[User talk:Malgond|talk]]) 09:31, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>2A01:CB08:82C3:1A00:F550:3C0C:BC34:851E</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407645&amp;oldid=prev</id>
		<title>93.176.188.2 at 16:50, 4 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407645&amp;oldid=prev"/>
				<updated>2026-03-04T16:50:42Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:50, 4 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l20&quot; &gt;Line 20:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 20:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus? [[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;::With a fedora? [[Special:Contributions/93.176.188.2|93.176.188.2]] 16:50, 4 March 2026 (UTC)&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>93.176.188.2</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407480&amp;oldid=prev</id>
		<title>Commercialegg at 01:32, 3 March 2026</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:3213:_Dental_Formulas&amp;diff=407480&amp;oldid=prev"/>
				<updated>2026-03-03T01:32:58Z</updated>
		
		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 01:32, 3 March 2026&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l19&quot; &gt;Line 19:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 19:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Although &amp;quot;mammals in general&amp;quot; have breasts not all do.&amp;#160; The platypus is a mammal and does produce milk to feed its young, however it has no nipples.&amp;#160; Instead an area of skin &amp;quot;leaks&amp;quot; (secretes) milk into the fur.&amp;#160; [[User:Martin|Martin]] ([[User talk:Martin|talk]]) 21:01, 2 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. &lt;/del&gt;[[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;:A platypus&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;? &lt;/ins&gt;[[User:Commercialegg|Commercialegg]] ([[User talk:Commercialegg|talk]]) 01:32, 3 March 2026 (UTC)&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Commercialegg</name></author>	</entry>

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