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Thread: Sets

  1. #1
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    Post Sets

    Hey, I need a little help.

    The problem is:

    Prove that Sets-mnozestva.jpg
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  2. #2
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    Re: Sets

    Quote Originally Posted by Breh View Post
    The problem is:
    Prove that Click image for larger version. 

Name:	mnozestva.jpg 
Views:	9 
Size:	2.7 KB 
ID:	37159
    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.
    Thanks from topsquark
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