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Thanks! 
送交者: mathjn 2006年6月06日09:44:40 于 [教育与学术]http://www.bbsland.com 
回 答: You also missed the important work of W. Thurston! 由 mathjn 于 2006年6月06日08:35:10:

You's better divide Poncare conjecture into 2 parts; In my personal opinion. You'd better add between youe stage 2 and 3 R. Hamilton's work. in 1982, R. Hamilton INVENTED Ricci flow and proved great theorem in 3D manifold. His method was geometrical analysis, of course S.T.Yau was very interested in. S.T.Yau realized the potential power of the Ricci Flow so he suggested Hamilton try Poincare conjecture. Please note, S.T. Yau could not do Ricci Flow by himself. Because as a Fields medal, he should not join a field which was created by other peoplehis friend R. Hamilton. What he could do is to support it and ask his students do it. Yau also suggested Hamilton try to find the Harnack property in the Ricci Flowthe LiYau inequality in Ricci Flow. After several hard work, finally, Hamilton found it. In 1995, R. Hamilton propose a great proposalin the first time, R. Hamilton raised the "finite time singularities in the Ricci flow". IN that 100 pages long paper, R. Hamilton propose a way to prove 3D poincare conjecture. That is why 19961997, Yau tried to push Chinese mathematision work in Ricci Flow, because R. Hamilton make the dream of proving 3D poincare conjecture as a reasonably possibility. I have to say, R. Hamilton himself can not finish his progrom. Just couldn't. Becasue in Perelman's papers, it needed some methods which R. Hamilton did not know. That is why it was G. Perelman win. I say again, I said it several times: The most important contribution belong to R. Hamilton and G. Perelman, at least 90%! It is so ridiculous that Yang Le, a person hasn't been doing research more than 10 years, and knows NOTHING about geometry, he claimed Chinese mathematicion make 30% contribution. It is ridiculous, just ridiculous. CaoZhu's work is great, but is demaged by Yang Le's stupid words. Thanks again! 
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