HI there,
Just getting into set theory just had a few questions/clarifications I guess you could call it.
if X = {[FONT=sans-serif]Ø, a} Y={{[FONT=sans-serif]Ø}, a} and Z = {a, {a}, {[FONT=sans-serif]Ø}}
So i understand X has 2 elements along with Y and Z has 3.
I know what the cardinalities...