星期三, 十月 31, 2007

项武义的Kepler梦想--jasonbwu的博客 - 使用 Google 工具栏进行发送

项武义的Kepler梦想--jasonbwu的博客

数学界很多人都知道项武义,倒不是因为他的数学有多强,而是因为一个古老的问题--Kepler猜想,这也让项武义成了数学界的一个笑柄。

这个项老头子早年跟哥哥项武忠一道研究拓扑。老了就从Berkeley回到香港科大养老。可他又偏偏闲不住,精力还特充沛,于是开始在国内到处宣传他的教学改革。听他的演讲,还真是豪情万丈,"Klein的Erlangen纲领只不过是个小小的idea。","分形几何那都是糊弄人的东西,是伪科学。"不明就里的学生还真对这个大块头的老头子佩服不已。直让人怀疑他是不是立志做数学界的"方舟子","王海"。

项老头子是个聪明人,因为他知道在德国说"Erlangen纲领是个trivial的idea"可是要挨鸡蛋的,他也知道在国外搞教改肯定没人理他。可怜了他只能在国内到处跑,凡是有关教改的大小会议一概不会错过。还出版了一套基础数学讲义丛书,可惜其中有不少"项氏风格"的废话。

也许觉得还不够出风头,项老头子不知咋的,开始对Kepler装球问题感起了兴趣。1992年到1993年,他在几个数学杂志上发表了几篇号称完全证明Kepler猜想的文章, 可惜不久就被著名数学家J.H.Conway, Toth, Hale等人指出其中存在着明显的漏洞。项老头子一听火了,在Math Intelligencer杂志上与Hales开始了针锋相对的论战。项还到处赠送自己关于Kepler猜想的证明,许多系实在推脱不了,只得收下两本,不禁令人想起图书馆里看到过的好多"民科"自费出版的歌德巴赫猜想的证明。糊涂的项老不是把精力放在检查和修补自己的证明上面,而是在国内有如民科般的行事,多次在国内的讲座上介绍他关于Kepler猜想的错误证明。

数学是来不得半点虚假的,Hales在1997年借助计算机,完全证明了Kepler猜想,得到公认,文章即将发表在Annals of Math上,Hales本人也在ICCM上作了45分钟报告。宣告项的Kepler梦想彻底破碎。

项武义的老哥项武忠曾被向来直言的丘批评过学问二流,所以当哥两听说丘田反目,当即成了田刚的铁杆拥趸。这不,项武义被北大请去开"基础数学讲座",宣扬"项氏改革",可惜听众寥寥。近日眼见田被丘批的难以招架,忙把自己的讲座变成了"批丘大会",这下引来学生无数,项老头子的口才又有了用武之地,好不风光。

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