04:06

Proof that { {x}, {x, y} } = { {a}, {a, b} } if and only if x = a and y = b

Anonymous

Shared 10/02/2020

01:41

Proof of A △ B = !A △ !B (Symmetric Difference)

Anonymous

Shared 09/02/2020

02:24

Proof that A = B is Equivalent to (A ∩ !B) ∪ (!A ∩ B) = ∅

Anonymous

Shared 06/02/2020