Can anyone help with explaining how to simplify this? X and Y are two sets. Simplify the following:
(Y − X)∩X
it is empty set since you are taking only other part from X with (Y-X), then intersecting with X.
E.g. Y = [1,2,3,4], X=[3,4,5]. Y-X=[1,2] => (Y − X)∩X = [] = ∅