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NOT(X e X) <-> X e S ----> SET THEORY IS NAIVE!

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Graham Cooper

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Jul 6, 2012, 2:06:06 AM7/6/12
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Naive Set Theory

F(x) <-> EXIST(S) x e S

F(x) = NOT(x e x)

RUSSELLS SET - the set of all sets that are not members of themself

NOT(R e R) <-> R e R
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