标题: 丘成桐从通俗角度介绍庞加莱猜想
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发表于 2006-6-26 13:48 资料 短消息 看全部作者
回复 #4 crayfish 的帖子

当然,不过要对非专业的人们解释什么是Poincare猜想还真是不容易。

好在解释起来不容易,不然过两天肯定又出来一堆声称用几行证明解决Poincare猜想的人,就像Goldbach猜想一样...


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发表于 2006-6-26 16:30 资料 短消息 看全部作者
回复 #6 lcarron78 的帖子

那么应该能看懂poincare猜想说的是什么


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发表于 2006-6-26 19:44 资料 短消息 看全部作者
某些记者的水平和职业素养...唉

我现在几乎不相信任何出现在报纸电视网络等媒体上的有关我所学专业的消息了
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发表于 2006-6-26 23:20 资料 短消息 看全部作者


QUOTE:
原帖由 lcarron78 于 2006-6-22 03:57 发表
http://it.sohu.com/20060621/n243848068.shtml

丘成桐昨日用了直观的比喻来理解庞加莱猜想,可以用一个人侧脸上的鼻子完全和脸庞收缩为一条线后,五官完全分布在一个球面上来理解。屏幕上先出现一张人的面孔,面孔处于三维空间中,其侧脸不断收缩,收缩到鼻子与脸庞连成一条线,此时屏幕上出现了圆满的球面。

其实我没看明白这个直观的比喻和poincare猜想有什么关系,不知道那个"惊呼的女孩"是不是真的明白了。

我还是觉得没有一定的专业基础是根本无法从直观上去理解simply connected closed 3-manifold的
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发表于 2006-6-27 09:42 资料 短消息 看全部作者


QUOTE:
原帖由 天宫公主 于 2006-6-27 08:44 发表


所谓直观地比喻,怎么说呢,
1。忽视simply connected, closed, manifold的具体的定义,把它想象成一个任意光滑物体。
2。如果这个光滑物体是一个球,那么我们可以在球上画个圈(loop),把这个圈象拉线似的 ...

公主懂得东东好多,无限崇拜ing~~~
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发表于 2006-6-28 09:53 资料 短消息 看全部作者
回复 #25 lcarron78 的帖子

本来对这方面关心不够,但查了一下发现这个会议真是大牛的聚会亚

贴篇Edward Witten的介绍吧,除了S.T.Yau之外本来对他有所耳闻的

Witten was born in Baltimore, Maryland, the son of Louis Witten, a physicist specializing in gravitation and general relativity. He received his bachelor's degree from Brandeis University, worked briefly for George McGovern's presidential campaign, and then returned to academia, receiving a Ph.D. from Princeton University in 1976. Afterwards, he worked at Harvard University as a Junior Fellow and at Princeton as a professor. He is currently the Charles Simonyi Professor of Mathematical Physics at the Institute for Advanced Study.

Witten's work combines deep physical insight with a remarkable command of modern mathematics. He has been active primarily in quantum field theory and string theory, and in related areas of topology and geometry. Among his many contributions are his proof of the positive energy theorem in general relativity, his work relating supersymmetry and Morse theory, his introduction of topological quantum field theory and his related work on mirror symmetry and supersymmetric gauge theories, and his conjecture of the existence of M-theory.

Witten is widely admired among his fellows. Among those who praise him is Sir Michael Atiyah, who said,

    "Although he is definitely a physicist, his command of mathematics is rivaled by few mathematicians... Time and time again he has surprised the mathematical community by his brilliant application of physical insight leading to new and deep mathematical theorems... he has made a profound impact on contemporary mathematics. In his hands physics is once again providing a rich source of inspiration and insight in mathematics."

Likewise, in his bestseller "The Elegant Universe", Columbia University physicist Brian Greene writes that Witten is "widely regarded as Einstein's successor in the role of the world's greatest living physicist."

Witten has been honored with numerous awards, including a MacArthur Grant, a Fields Medal, and the National Medal of Science (2004). He also appeared in the List of TIME Magazine's 100 most influential people of 2004. Witten has the highest H Index of any living physicist.
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发表于 2006-6-28 17:21 资料 短消息 看全部作者
回复 #27 天宫公主 的帖子

媒体都是以Hawking为切入点来报道的,我觉得并不客观
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