- #1
mbcsantin
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Homework Statement
Prove the following: For any sets A, B, C in a universe U:
A n B = Universe iff A = Universe and B = Universe
Homework Equations
none.
The Attempt at a Solution
I tried to do the questions but I am just not sure if i did it right. id appreciate if you can check my work and let me know what changes i have to make. thanks
the symbol "n" means "intersect"
U for Union
Suppose A n B = U and suppose that A is a proper subset of U then
x is an element of B but
x is not an element of A n B since x is not an element of A