Notes on Venn diagrams
We will have three sets.
U is the universe, all the things that we will discuss.
A and B are the subsets.
The universe is the rectangle, A and B are the two ovals. A on the left and B on the right.
Example. Let the universe be U = {a, b, c, d, e, f, g}
A = {b, e, a, d}
B = {f, a, c, e}
a and e are in the middle sliver, while b and d are in the left oval and f and c are in the right oval. The letter g isn't in either list, so it goes outside the circles.
Sorry the picture is hard to read.
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