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``Re: Nested prooves by contraction?'' by Silentvoice on 2008-07-06 00:04:35
That said, I love contradiction arguments :) Especially old ones, I really like to look at Euclid's arguments. Glancing back into the past is a great thing to see, deductive proof was one of the best things left by the Greeks. Also the discovery of the irrational numbers I guess, since that's what most of our real numbers are.
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