1. ## Sets

Hey, I need a little help.

The problem is:

Prove that

2. ## Re: Sets

Originally Posted by Breh
The problem is:
Prove that
That equality is often given as the definition of set different.

$(\forall x)[x\in B\vee x\notin B)$.
Your textbook must define $A\setminus B$ as $\{x:x\in A\wedge x\notin B(x\in\overline{B})\}$.

Which exactly what you are asked to prove. We do not prove definitions.

Therefore, either the question is faulty or you must give us more information.