If you think Venn diagrams are just a bunch of interlocking circles, ... Grünbaum and Edwards independently discovered this symmetrical Venn diagram for seven sets, the next prime number.

Henderson only showed that a prime number of sets is necessary, not that you can always design a symmetric Venn diagram for every prime number. Thus began a contest to find larger and larger examples.

A Venn diagram is a mathematical illustration that shows all of the possible mathematical or logical relationships between ... the song was number one at the time this was written. 435VennTshirt.png.

That is . . . without the shading, the diagram shows the union of three subsets: A AND NOT(B), A AND B, B AND NOT(A). The cross-hatching indicates that the subset A AND NOT(B) is empty. Thus, the only ...

It may look like a flower, but this is actually a new Venn diagram -- one that for the first time manages to represent 11 sets of data ...