- #1
YoshiMoshi
- 228
- 8
Homework Statement
I'm reviewing my powerpoints from class and see the formula A ∩ B ⊆ A. Is this a correct formula? I interpret this as all elements of set A intersected with set B is a subset of set A. I don't think this is a true statement, is it? Sorry it's been a while since I have studied set theory, probably back in high school days or so. I don't see how it could be true because elements of B are not necessarily elements of just A alone.