Would someone please help me with the answer to this question please:
(it is a prep question for the qualifier and taken from an old exam)
Assume a function f: A->B and sets A1, A2 A, for which f(A1 A2) f(A1) f(A2).
Demonstrate this inequality.
Would someone please help me with the answer to this question please:
(it is a prep question for the qualifier and taken from an old exam)
Assume a function f: A->B and sets A1, A2 A, for which f(A1 A2) f(A1) f(A2).
Demonstrate this inequality.