Let A, B, and C be sets. Prove the following claim, or give a counterexample:
(A - B) - C = (A - C) - (B - C)
Hello thehollow89 , also written (as Plato has done) , is the set of elements that are in and not in ; that is, the set (notice the prime character , after the ). You may find the notes at Discrete mathematics/Set theory - Wikibooks, collection of open-content textbooks helpful (which I have written under the name Nigeltn35).
Grandad