I'm very sorry that this is off topic, but I couldnt find anywhere else to ask this type of question on the web.
Does anyone know of a GOOD message board for discrete structures/discrete math?
Anyways, I mine as well as the question.
A function g is defined as g(A) = T U (A /\ S) where T, S are fixed subsets of universe U . Does g have an inverse? If so, what is it. If not, why not?
( /\ is intersection operator )
Thank you all and sorry again for the off topic post!!