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		<updated>2026-04-11T20:07:11Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2803:_Geohydrotypography&amp;diff=318003</id>
		<title>Talk:2803: Geohydrotypography</title>
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				<updated>2023-07-18T07:25:13Z</updated>
		
		<summary type="html">&lt;p&gt;Der57: &lt;/p&gt;
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100 words per minute seems… fast. [[Special:Contributions/172.69.33.64|172.69.33.64]] 04:47, 18 July 2023 (UTC)&lt;br /&gt;
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Is it accurate to say it's a portmaneau o fgeology, hydrology and typography? Surely the geo- and hydro- could also be considered here to have come from the root words (the same way they have in geology and hydrology) because they're just adding scope to the -ography from typography, or rather specifying that it's typography involving *geo* and *hydro*. [[Special:Contributions/172.70.86.15|172.70.86.15]] 06:41, 18 July 2023 (UTC)&lt;br /&gt;
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It may see obvious to most, but I'd like to suggest a bit more literal explanation of the mechanics involved.  It took me far too many readings, both of the comic and the explanation, to realize that the comic's &amp;quot;expansion of the ocean basin due to plate tectonics&amp;quot; is independent from the characters being &amp;quot;written&amp;quot; on the ocean.  The word-wrap effects are just due to the existing rate of expansion due to plate tectonics.  I was looking for some kind of typically Randallian closed loop (as in [[688: Self-Description]]).  [[User:Der57|Der57]] ([[User talk:Der57|talk]]) 07:25, 18 July 2023 (UTC)&lt;/div&gt;</summary>
		<author><name>Der57</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2735:_Coordinate_Plane_Closure&amp;diff=306051</id>
		<title>Talk:2735: Coordinate Plane Closure</title>
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				<updated>2023-02-10T10:52:23Z</updated>
		
		<summary type="html">&lt;p&gt;Der57: &lt;/p&gt;
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Is there significance to the fact that the axes aren't labeled in the warning? Can I plot y = 0.75x today or not?[[User:Brossa|Brossa]] ([[User talk:Brossa|talk]]) 15:05, 8 February 2023 (UTC)&lt;br /&gt;
: you cannot because it intersects the given square as shown in this desmos thing i whipped up in 2 seconds: https://www.desmos.com/calculator/zb9nbrl6s5 [[Special:Contributions/172.70.43.29|172.70.43.29]] 15:38, 8 February 2023 (UTC)Bumpf&lt;br /&gt;
::I can if the forbidden coordinates are 1 ≤ x ≤1.5 and 1.5 ≤ y ≤2[[Special:Contributions/172.70.131.66|172.70.131.66]] 15:56, 8 February 2023 (UTC)&lt;br /&gt;
::: In the absence of other information, assuming horizontal ''x'' and vertical ''y'' would be conventional. --[[Special:Contributions/141.101.98.145|141.101.98.145]] 19:15, 8 February 2023 (UTC)&lt;br /&gt;
&amp;quot;Hole&amp;quot; is also sometimes used to mean a particular coordinate on a function which is discontinous at some point but could have a value (for example sinx/x with a hole at (0,1)). [[Special:Contributions/172.70.206.92|172.70.206.92]] 19:18, 8 February 2023 (UTC)&lt;br /&gt;
Randall listed 2 points, yet the cordoned off area is a square. 2 points define a line, not a square, he really should have thought of that. How is someone to know the invalid points without the diagram? Even with the diagram, we don't know whether points on the boundary are included! Is the line y=1 a valid line to draw? THESE ARE QUESTIONS THAT NEED TO BE ANSWERED RANDALL BE MATHEMATICALLY RIGOROUS NEXT TIME.&lt;br /&gt;
:Right! A hole pops up in rational functions when there's a term that appears in the numerator AND the denominator. However, it does not mean the graph is broken; just that there is no defined y-value at the x-value of the hole. ----[[User:Theunlucky|Theunlucky]] ([[User talk:Theunlucky|talk]]) 16:55, 9 February 2023 (UTC)&lt;br /&gt;
: One reason could simply be the alignment between the coordinates and time. Reading out the numbers without paying attention to the mathematical punctuation you can form the sentence &amp;quot;the coordinate plane will be closed Thursday between 1:51 and 2:15 to repair a hole&amp;quot;, following the typical structure of such a notice to not just provide a day but a time.&lt;br /&gt;
Ironically, the notice makes it sound like using y=1 is fine, and the affected region is only strictly greater than y=1. That would make the region that's closed an open set, and the region that's open a closed set. [[Special:Contributions/172.70.110.230|172.70.110.230]] 22:46, 8 February 2023 (UTC)&lt;br /&gt;
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:Right! A hole pops up in rational functions when there's a term that appears in the numerator AND the denominator. However, it does not mean the graph is broken; just that there is no defined y-value at the x-value of the hole.&lt;br /&gt;
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🚧 DETOUR 🠕 KEEP WITHIN [[2646: Minkowski Space|MINKOWSKI CONES]] ⛔ DO NOT ENTER Y &amp;lt; |X| 🚧 [[Special:Contributions/162.158.90.38|162.158.90.38]] 23:37, 8 February 2023 (UTC)&lt;br /&gt;
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So the joke is that the coordinate plane is closed when there's damage that causes it not to be closed? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 23:44, 8 February 2023 (UTC)&lt;br /&gt;
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Aw man, I was really looking... ''forward''... to doing math today. [[Special:Contributions/172.71.222.76|172.71.222.76]] 11:58, 9 February 2023 (UTC)&lt;br /&gt;
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I thought the title text was referring to the danger of lines on a 2d graph &amp;quot;falling through&amp;quot; the hole and inadvertently gaining a third dimension, which might collide with graphs at z=-1 etc. [[Special:Contributions/162.158.34.75|162.158.34.75]] 16:14, 9 February 2023 (UTC)&lt;br /&gt;
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My RSS reader picked this comic up at exactly midnight UTC on Feb 8, which stood out to me because usually they seem to be posted later in the day. [[User:Danielp82|Danielp82]] ([[User talk:Danielp82|talk]]) 04:02, 10 February 2023 (UTC)&lt;br /&gt;
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This comic reminded me of Complex Analysis, where we integrate in circles around singularities of complex functions (aka holes). See [https://en.m.wikipedia.org/wiki/Cauchy%27s_integral_formula Cauchy integral formula]. Maybe we should mention that in the explanation. [[Special:Contributions/172.71.154.39|172.71.154.39]] 07:29, 10 February 2023 (UTC)&lt;br /&gt;
:The beauty of the Wiki is that you can add it yourself, if you think you can word it relevently. Or anyone who now wants to. (Whoever does, note that &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{w|Cauchy's integral formula}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;, or an altered text version like your &amp;lt;code&amp;gt;&amp;lt;nowiki&amp;gt;{{w|Cauchy's integral formula|Cauchy integral formula}}&amp;lt;/nowiki&amp;gt;&amp;lt;/code&amp;gt;, would be the prefered wikilink format to use.) [[Special:Contributions/141.101.98.151|141.101.98.151]] 08:08, 10 February 2023 (UTC)&lt;br /&gt;
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I made the unfortunate but defensible change from &amp;quot;airmen&amp;quot; to &amp;quot;air missions&amp;quot;.  The FAA re-consecrated &amp;quot;NOTAM&amp;quot; to the gender-neutral (and execrable) form on 2 Dec 2022.  The &amp;quot;airmen&amp;quot; form may still be in use by ICAO or nations other than the US. [[User:Der57|Der57]] ([[User talk:Der57|talk]]) 10:52, 10 February 2023 (UTC)&lt;/div&gt;</summary>
		<author><name>Der57</name></author>	</entry>

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