A Venn diagram is a way to illustrate sets and their relation to each other. It would be much easier to explain with paper and pencil, but here goes:
Suppose you have two sets, A = {2.4.6.8.10,12}, and B = {3,6,9,12}. Draw two ovals which overlap. Outside the left one, write "A", and write "B" next to the other. In the overlapping area, write the numbers 6 and 12. In the rest of the A oval, write 2, 4, 8, and 10. In the rest of the B oval, write 3 and 9. Now the A oval contains all the number in the set A, and the B oval contains all the numbers in set B. The overlapping section contains the numbers in A⋂B, the left space is AnotB and the right space is BnotA. The entire area inside the two ovals is A⋃B.
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He created the "Venn diagram" which is used when dealing with "sets" in mathematics.
I think it would be pretty safe to say he invented the Venn Diagram
Ermahghurd this is my first time answering someones ? :) ok here is le answer John Venn Contributed his life to being a philosopher in logic and math. One of the contributions used by John Venn today are the Venn Diagram which compares and contrasts two unlike items. :)
John Venn.
Venn diagrams are named after their inventor, John Venn.