_________________ If I have seen farther, it is by standing on the shoulders of the giants.---Newton
isomorphism Not too shy to talk
註冊日: 2007-01-30 發表數: 40
I question the validity of this proof. I think it is a mere restatement of the conditions of induction.
Usually, a proof of induction on the natural numbers first considers the set of all members such that P(a) is false, and considers the least element of that set.
註冊日: 2002-07-30 發表數: 1094
_________________ 孫文先 敬上
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