# Category:Euler diagrams

- These are comics that contain one or more Euler diagrams.
- They should not be confused with Venn diagrams although some of the comic titles refer to them as such.

- Randall seems to have made mistakes, or maybe done this on purpose as indicated with the comic 2721: Euler Diagrams.
- Apart from that comic where he mentions that he wishes to call all Euler diagrams for Venn diagrams he has also made the "mistake" two time before:
- 1180: Virus Venn Diagram
- 2090: Feathered Dinosaur Venn Diagram
- All three are now included in both categories, as Venn diagrams are mentioned even though they are not drawn!

- A Venn diagram shows all possible combinations of two or more sets, including those with no elements, and therefore all of the circles must intersect.
- An Euler diagram only needs to depict the non-empty combinations, and therefore does not have this constraint.
- Since all Venn diagrams are also Euler diagrams the Venn diagram category is a sub category of Euler diagrams.
- But only those where the diagrams is not a Venn diagram or if Euler diagrams are also mentioned along with Venn diagrams, should the comics be included in both categories. (Like the three "mistakes" from above.)

- Apart from that comic where he mentions that he wishes to call all Euler diagrams for Venn diagrams he has also made the "mistake" two time before:

## Pages in category "Euler diagrams"

The following 6 pages are in this category, out of 6 total.