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Empty set?by pivoxa15
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#19
Dec1006, 07:57 PM

P: 2,268

I have fixed the proof by using a collory that the empty set is a subset of everything. But you think my proof is trivial. You are right. But for a beginner like me I want to make things rigorous even these basic things, after all it tricked me in thinking that the (proved) result was a contradiction. 


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