how do you prove they are equivelant?

how do you prove they are equivelant?

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送交者: xinku 于 2008-01-09, 17:57:17:

回答: this is invalid proof. Since the first assumtion is equivlent to 由 steven 于 2008-01-09, 15:57:43:

Let's limit the scope of the discussion in, say properties of number, - steven (624 bytes) 2008-01-09, 18:16:30 (196978)