g****t
发帖数: 31659 | 1 我记得有本传记还是量子力学史话上讲的。
当年我找了那本分析力学书，粗粗一翻，大吃一惊阿。
老杨说Dirac认为未来数学突破在分析，我一点也不吃惊。 |
e********y
发帖数: 935 | 2 敢问是什么书？
话说他要是真的做了很多，不至于还要去查Possion括号吧...
【在 g****t 的大作中提到】
: 我记得有本传记还是量子力学史话上讲的。
: 当年我找了那本分析力学书，粗粗一翻，大吃一惊阿。
: 老杨说Dirac认为未来数学突破在分析，我一点也不吃惊。
|
g****t
发帖数: 31659 | 3 Possion括号决不简单.那本变态书,
无牛顿的运动学部分(Kinematics)都够大多数本科生受不了的.
敢问是什么书？
话说他要是真的做了很多，不至于还要去查Possion括号吧...
【在 e********y 的大作中提到】
: 敢问是什么书？
: 话说他要是真的做了很多，不至于还要去查Possion括号吧...
|
w*********o
发帖数: 434 | 4 i remember yang said physics was dead several years ago |
q*d
发帖数: 22178 | 5 Dirac学电机工程还是什么的时候,学过一阵子射影几何.
然后他有次讲座说,射影几何对他发展量子力学有非常重要的影响,
Penrose当时在座,就问他怎么影响了你?
Dirac没有回答.
【在 g****t 的大作中提到】
: 我记得有本传记还是量子力学史话上讲的。
: 当年我找了那本分析力学书，粗粗一翻，大吃一惊阿。
: 老杨说Dirac认为未来数学突破在分析，我一点也不吃惊。
|
Q*T
发帖数: 263 | 6 Interesting.
Here is an article from "Not Even Wrong":
Dirac’s Hidden Geometry
Posted on September 24, 2005 by woit
There’s an interesting article by Graham Farmelo in last week’s Nature,
entitled Dirac’s Hidden Geometry. Most people think of Dirac as a brilliant
algebraist, but he himself claimed that his motivations and way of thinking
were much more geometrical than algebraic. Farmelo’s article contains an
amusing account of how Roger Penrose tried to get Dirac to explain how
projective geometry had influenced his work in quantum mechanics. Dirac gave
a talk about this at Boston University in 1972, but, after giving a
presentation about projective geometry, stopped before explaining the
relation to quantum mechanics. Penrose, the moderator, asked Dirac about the
relation to quantum mechanics, and in answer “Dirac gave his trademark
shake of the head, and declined to speak.”
Several historians of science have tried to figure out what Dirac’s
geometrical motivations were. This question is dealt with in Olivier
Darrigol’s very interesting book (which is now available on-line) From c-
numbers to q-numbers: The Classical Analogy in the History of Quantum Theory
. The material about Dirac and projective geometry is in chapter XI. On the
same topic, there’s also an article by Peter Galison published in 2000 in
the journal Representations, entitled The Suppressed Drawing: Paul Dirac’s
Hidden Geometry.
【在 q*d 的大作中提到】
: Dirac学电机工程还是什么的时候,学过一阵子射影几何.
: 然后他有次讲座说,射影几何对他发展量子力学有非常重要的影响,
: Penrose当时在座,就问他怎么影响了你?
: Dirac没有回答.
|
q*d
发帖数: 22178 | 7 射影几何这门课似乎是学机械的人才会学的吧?
brilliant
thinking
gave
the
Theory
the
s
【在 Q*T 的大作中提到】
: Interesting.
: Here is an article from "Not Even Wrong":
: Dirac’s Hidden Geometry
: Posted on September 24, 2005 by woit
: There’s an interesting article by Graham Farmelo in last week’s Nature,
: entitled Dirac’s Hidden Geometry. Most people think of Dirac as a brilliant
: algebraist, but he himself claimed that his motivations and way of thinking
: were much more geometrical than algebraic. Farmelo’s article contains an
: amusing account of how Roger Penrose tried to get Dirac to explain how
: projective geometry had influenced his work in quantum mechanics. Dirac gave
|
Q*T
发帖数: 263 | 8
No idea.
Check out the script of Dirac's talk:
http://www.atomicprecision.com/Other/Paul%20Dirac%20Talk%20-%20
【在 q*d 的大作中提到】
: 射影几何这门课似乎是学机械的人才会学的吧?
:
: brilliant
: thinking
: gave
: the
: Theory
: the
: s
|
g****t
发帖数: 31659 | 9 我铅笔手画过1年机械制图.确实学了点画法几何,就是射影几何的皮毛.
射影几何这门课似乎是学机械的人才会学的吧?
brilliant
thinking
gave
the
Theory
the
s
【在 q*d 的大作中提到】
: 射影几何这门课似乎是学机械的人才会学的吧?
:
: brilliant
: thinking
: gave
: the
: Theory
: the
: s
|
x******i
发帖数: 3022 | 10
量子力学的是复射影几何，是一种很牛的数学，机械上恐怕用不到吧。
【在 q*d 的大作中提到】
: 射影几何这门课似乎是学机械的人才会学的吧?
:
: brilliant
: thinking
: gave
: the
: Theory
: the
: s
|
g****t
发帖数: 31659 | 11 用不上复数.
俺们最复杂的就是给一个铁疙瘩,然后画三视图.
以及给了两视图,画第三视.
量子力学的是复射影几何，是一种很牛的数学，机械上恐怕用不到吧。
【在 x******i 的大作中提到】
:
: 量子力学的是复射影几何，是一种很牛的数学，机械上恐怕用不到吧。
|
