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全部话题 - 话题: algebras
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t**********m
发帖数: 205
1
来自主题: Astronomy版 - 拓扑与理论物理 (图)
mmiittbbss网友 kennkqzhang 有一个关于数学和物理的问题:
“原来那个写了一本非常好的‘calculus’书的,是个做differential geometry的;
相信他的书都写得很好;
不过,原本以为场论里面都是代数,both classical linear space algebra and
modern abstract algebra;
没想到,又是geometry,跟广义相对论很相似?
需要 albegraic topology,differential topology?
数学太乱了;
物理世界真的有这么复杂码??

本人就是从纯数学转到理论物理的七七级大学生。你要问我为什么学理论物理,答案很
简单:数学没有诺贝尔奖。
本人根本就不是什么天才,但从小就有打破砂锅问到底的决心!
1. 微积分
你提到Spivak的‘calculus’,真是绝了!我在中国教了十一年书,痛恨微积分的教材
,这些教材把当年牛顿的思想忘得一干二净!所以我写了一本微积分的教材,企图复辟
牛顿的思想,但没有出版该教材(因为我要花时间争取获诺贝尔奖)。所幸的是,六年
之后,在华中科技
l**********1
发帖数: 5204
2
来自主题: Biology版 - 改bioinformatic 求建议
sure you are using WIN7 or 8 WINXP PC with MT
but matrix almostly use Unix/Linux/Mac OS
ps:
about MT
also pls refer,
HTTP: //www.math.nus.edu.sg/aslaksen/
and plus
考古下mitbbs Bio sub branch one 旧贴:
Biology版 - 从投稿到发表一共14年!看看这个math作者得有多强的心理素质
HTTP: //www.weiming.info/zhuti/Biology/31637395/
or
HTTP: //blog.sciencenet.cn/blog-579446-654476.html
that 14 Ys paper first author is above MT noted web site: Aslaksen H
that paper its title:
Generators of matrix algebras in dimension 2 and 3, Linear Al... 阅读全帖
l**********1
发帖数: 5204
3
来自主题: Biology版 - 请教neurogenomics职业规划
和毛子 还有东欧的 匈奴的后代中的数学家 比 华人的 数学 抽象基因正遗传
差远了去了
所以都搞Bioinformatics data minging
而不会搞 how to merge below paper to
Math/Comp/Systems/Synthetic biology/medicine etc
Generators of matrix algebras in dimension 2 and 3, Linear Algebra and its
Applications. 430 (2009)
mitbbs 存档
Biology版 - 从投稿到发表一共14年!看看这个math作者得有多强的心理素质
HTTP: //www.weiming.info/zhuti/Biology/31637395/
l**********1
发帖数: 5204
4
来自主题: Biology版 - 0基础转CS的入门课程

Sure,
pls 考古买买提 旧贴下:
同主题阅读:Re: 请教一下CS的同学,组合数学和离散数学有什么区别? (转载
[版面:数学][首篇作者:Aciclovir] , 2008年07月13日16:00
[ 1 ]
发信人: Aciclovir (笨笨), 信区: Mathematics
标 题: Re: 请教一下CS的同学,组合数学和离散数学有什么区别? (转载)
发信站: BBS 未名空间站 (Sun Jul 13 16:06:24 2008), 转信
侧重点不一样,本质上都在讲同一个东西
combinatorial math and discrete math主要讲一些结构上的性质
combinatorial opt 主要讲具有组合性质的一些问题
discrete opt and integer opt是相对于continuous opt来讲的
归结到具体问题跟组合优化没啥区别
http://www.mitbbs.com/article_t/Mathematics/31160430.html
then go to
HTTPS: //www.math.ucdavis.e... 阅读全帖
l**********1
发帖数: 5204
5
来自主题: Biology版 - 0基础转CS的入门课程

Sure,
pls 考古买买提 旧贴下:
同主题阅读:Re: 请教一下CS的同学,组合数学和离散数学有什么区别? (转载
[版面:数学][首篇作者:Aciclovir] , 2008年07月13日16:00
[ 1 ]
发信人: Aciclovir (笨笨), 信区: Mathematics
标 题: Re: 请教一下CS的同学,组合数学和离散数学有什么区别? (转载)
发信站: BBS 未名空间站 (Sun Jul 13 16:06:24 2008), 转信
侧重点不一样,本质上都在讲同一个东西
combinatorial math and discrete math主要讲一些结构上的性质
combinatorial opt 主要讲具有组合性质的一些问题
discrete opt and integer opt是相对于continuous opt来讲的
归结到具体问题跟组合优化没啥区别
http://www.mitbbs.com/article_t/Mathematics/31160430.html
then go to
HTTPS: //www.math.ucdavis.e... 阅读全帖
k******0
发帖数: 1073
6
Zhang, Yitang’s life at Purdue
(Jan. 1985-Dec, 1991)
T.T.Moh
1
Dr. Zhang Yitang made a major advancement to the twin prime conjec-ture as
verified by Prof. H. Iwaniec, a famous number theorist. Some people are
curious about Yitang’s life as a graduate student at Purdue University.As
the thesis adviser of Dr. Zhang, I will share my memories of
him.
1 China to USA
By the recommendations of Prof. Ding, Shihsun (an algebrais
t, Presi-dent of Peking University) and Prof. Deng, D.G. (Chairman of
Depar... 阅读全帖
s*******2
发帖数: 598
7
来自主题: Biology版 - 千老转行选择专业要慎重(ZZ)
发信人: s19990602 (s19990602), 信区: biojailbreak
标 题: Re: 如何达到MLS CLS MT Programme的入学要求?
发信站: BBS 未名空间站 (Fri Jan 3 18:44:46 2014, 美东)
1。 你要把在中国的本科成绩做认证,根据认证结果,决定那些重修。因为靠CLS 证书
的时候,需要。阅读ASCP 网页说明。
2. 社区大学的CLS, 是否经过ASCP认证授权,否则没有资格报考CLS 证书
3, 你要做研究,你们这个州有多少这样的Program, 比如我们所在地区4个州有39个
Program, 学生找工作非常困难。同正在学习的学生,老师多交流,再决定。CLS 全美
有本科226个,专科有230个Program, 现在人才过剩了。
你查看以下NAACLS, CAAHEP网页,有30种不同的种类,如超声技术员,X光技术员,你
适合哪类?那类工作好找?
做了功课后,在决定。
我们小区有个大姐,盲目读biotechnology master, 现在在大学实验室当技术员,工资
很低,不稳,如果她当时选择好的专业读护理本... 阅读全帖
s*******2
发帖数: 598
8
来自主题: Chemistry版 - 千老转行选择专业要慎重(ZZ)
发信人: s19990602 (s19990602), 信区: Biology
标 题: 千老转行选择专业要慎重(ZZ)
发信站: BBS 未名空间站 (Fri Jan 3 18:58:07 2014, 美东)
1。 你要把在中国的本科成绩做认证,根据认证结果,决定那些重修。因为靠CLS 证书
的时候,需要。阅读ASCP 网页说明。
2. 社区大学的CLS, 是否经过ASCP认证授权,否则没有资格报考CLS 证书
3, 你要做研究,你们这个州有多少这样的Program, 比如我们所在地区4个州有39个
Program, 学生找工作非常困难。同正在学习的学生,老师多交流,再决定。CLS 全美
有本科226个,专科有230个Program, 现在人才过剩了。
你查看以下NAACLS, CAAHEP网页,有30种不同的种类,如超声技术员,X光技术员,你
适合哪类?那类工作好找?
做了功课后,在决定。
我们小区有个大姐,盲目读biotechnology master, 现在在大学实验室当技术员,工资
很低,不稳,如果她当时选择好的专业读护理本科,或者灵床技术员本科,现在在医
院工作,
收入... 阅读全帖
f****e
发帖数: 15
9
来自主题: Computation版 - solve two variable nonlinear in matlab

: ~~~~~~~~~
no ba, he meant to solve algebraic equation.
i don't think matlab can solve every arbitrary algebraic equation.
s*******g
发帖数: 4
10
来自主题: Computation版 - lapack++ and blitz++
blitz++ is designed to be a multi-dimensional array library (a very fast one),
not
a linear algebra library (such as boost::ublas or lapack++). For instance,
blitz++
does not provide sparse matrices. A look at lapack++ website
http://math.nist.gov/lapack++/
seems to imply that it is not actively developed (last update in 2000).
boost::multi_array also provides multi-dimensional arrays, but it is much
slower
than blitz++. I have only used boost::ublas for linear algebra (e.g. sparse
matrices)
a
d*******m
发帖数: 12
11
来自主题: Computation版 - 关于matlab里maple('MeijerG', ...)的问题
想在matlab里调用maple的Meijer function。我输入的命令如下:
maple('MeijerG',[[1/2], []], [[3/2,0.5], [0]], 1/4)
运行后,系统的出错信息为
??? Error using ==> maple
Error, invalid input: MeijerG expects its 1st argument, alist, to be of type
[list(algebraic), list(algebraic)], but received 1/2
实在不知道错在哪? 哪位大侠可以帮帮忙啊? 在下先谢了!!!
qt
发帖数: 9432
12
来自主题: Computation版 - 有做GPU computing的吗?
是,linear algebra应该能加速不少。

内存coalesce访问等等,一般来说能vectorize的算法在GPU上会有比较好的加速比,比
如linear algebra,image processing等等。
q*******I
发帖数: 435
13
来自主题: Education版 - 感觉中学数学教科书条理挺乱
之前在版上发过贴问询教师职业。现在还没有决定投身,先做一步看一步,在做家教。
由于数学辅导需求大,就先尝试做中学数学家教,一边教,一边熟悉他们的教材。
我在加州这边,看的是Prentice Hall的 Algebra 1&2,这是当地一所名高中的教材。
我看的过程中感觉这教材编排得挺乱的,同样的内容在不同年级不同章节重复说了很多
遍,每次提出都像是重新提出一样,同样出版社的Algebra 1和2应该是承接的关系,是
同一拨学生连续学下来的呀,这样上起来不觉得没有条理么?
a*****g
发帖数: 19398
14
More High School Math And Science Requirements, More Dropouts
Adding more math and science courses to high school graduation requirements
made students more likely to drop out, according to a recently published stu
dy by Washington University researchers.
The study compared course requirement changes between 1980 and 1999. Florida
was among a group of states with the most required math and science courses
— six. Proponents argue that requiring tougher courses — rigor, in edubuz
zspeak — better p... 阅读全帖
e*******e
发帖数: 248
15
for signal processing, stochastic processes and linear algebra (advanced
algebra). If you will do some modeling of physical systems, then numerical
methods for ODE/PDE.
m*****h
发帖数: 2292
16
以前coding theory主要是做algebraic codes,不过最近不流行了
因为基于probabilistic method的编码目前实际效果要好很多
但不是说做algebraic codes就没前途了,如果哪个大牛突然提出一种新的好编码,马
上就会又火起来的
j*******r
发帖数: 20
17
我不懂ee,但是以Algebra,Geometry,Stochastics在cs中应用广泛的程度而言,很难
想象ee"更"接近
ps,离散数学和Analysis,Algebra,Geometry,Stochastics算是对数学的两种不同的
分类方式
b*****t
发帖数: 1700
18
Coding Theory: Abstract Algebra是基础
Communications/Signal Processing: 离开Matrix Analysis是不行的。。
Coding Theory: Algebraic Geometry
Communications: Stochastic Geometry
Information Theory: Information Geometry
CV/PR/IP/CG等领域用到的Geometry也很多,当然这些算是和CS的交叉领域
Stochastics不说了,Communications/Signal Processing就是建立在这个基础之上的
按前苏联Kolmogorov的看法,Information Theory直接就是Probability Theory的一个
分支,和Ergodic Theory也关系紧密,Entropy是Ergodic Theory中的一个基本量
你说说CS的吧,呵呵
j*******r
发帖数: 20
19
这些东西cs里研究的都不少,哪能全算在ee的头上?
那我就再来说点儿别的
Algorithms: 广义地讲,啥东西都是算法,这就没劲了。就说经典的问题,Algebra少
不了。要精细分析复杂度,
Functional Analysis也是常用的
Crypto: Algebraic Geometry, Galois Theory, Stochastic
Graphics: Differential Geometry
Security&Verification: Model Theory, Category Theory
Complexity: Logic, Model Theory, 至于最近的derandomization, imapproximation,
pcp theorem什么的,我都不知
道应该归再哪儿,就算是独立的吧,呵呵
c******m
发帖数: 599
20
来自主题: Mathematics版 - [书评]大学生数学专题讲座-S. Lang
发信人: caldream (我是小猪我怕谁:)), 信区: Mathematics
标 题: [书评]大学生数学专题讲座-S. Lang
发信站: 北大未名站 (2002年10月22日13:21:20 星期二) , 站内信件
[Title] Math Talks for Undergraduates
[Author] Serge Lang
[Publisher] !999, Springer-Verlag New Nork
[书名] 大学生数学专题讲座
[译者] 马进喜 陆起韶 (北航)
[出版社] 2002.7 机械工业出版社 北京
这本书是刚刚翻译出版的,16开本,挺薄的,94页
Lang(1927-)是Yale的数学教授,这家伙是个写书狂,
写过的书有几十本之多,在amazon上有64条记录
大家比较熟悉的有Algebra, Comlex Analysis,
Algebraic Number Theory等等,当然还有很多的
本科生的书,微积分,线性代数 很多。
当然他的书也被V I Arnold批评过,见以前的帖子。
Lang喜欢作报告,他给中学生和公众做的数学报
s******t
发帖数: 134
21
来自主题: Mathematics版 - Re: Can anyone recommend me a good book about
Artin's Algebra is quite good, however not too much about lattice,
just mention the definition and several examples.
I think that for group theory,
any books about abstract algebra are quite the same.
B****n
发帖数: 11290
22
来自主题: Mathematics版 - Re: one problem in stochastic process, t
T is a space, F is its sigma algebra, P is a probability measure defined on F
S is a metric space,K is its sigma algebra
A(w,t),B(w,t) are two stochastic processes in S(ie. given w in
T,A(w,t),B(w,t) are in S and
{w:A(w,t) in C(in K)} belongs to F )
A(t),B(t) is independent <=>P(w|A(w,t) in C intersect B(w,t) in D)=P(A(w,t) in
C)*P(B(w,t) in D)
where C and D are in K ..........(1)
define finite dimensional set : j is a projection from S to R^k ,finite
dimensional set is
j^(-1)(A) where A belongs
x*****d
发帖数: 427
23
来自主题: Mathematics版 - Does anyone know Grassmann ring?
an algebra is a ring with a compatible scalar-multiplication structure.
When we don't need to talk about the scalar multiplication of
the Grassmann algebra, we can simply call it a ring.
I*S
发帖数: 203
24
来自主题: Mathematics版 - 求证一个代数式
表达式见附件,
http://bbs.zju.edu.cn/cgi-bin/showfile?name=fig.bmp
其中n是一个对称张量(就当是对称矩阵),k是一个矢量;
K是一个算符(具体定义参附件)。
感觉式中knk第一个应该有转置,否则乘出来不会是个数了。
个人对这个式子比较摸不着头脑,文献里这么描述:
This can be proved simply, by evaluating the right
and left hand sides in a computer algebra system
using arbitrary symmetric components for n, or perhaps
some other clever way.
computer algebra system好像就是说像mathematica啊什么的
符号运算工具。
大侠帮忙看看,有没有什么头绪。
多谢!
i*********y
发帖数: 23
25
我就在上linear algebra,没有你说的那么难阿,你要认真听老师的课,多作练习就可
以拉,你是那个校区的?我在hunter,我妹在brooklyn,不管是calculus or linear
algebra,cuny的课都不是很难!
A*******r
发帖数: 768
26
Linear algebra and its app. 文章太多,很水
SIAM 好像很慢
EJOR 个人觉得质量不高,欧洲运筹学会的会刊
其实我觉得重要的是quick review
这个很大程度要看你老板的分量了

paper要投 老板居然问我要投哪
老板说Mathematical Programming肯定没戏 SIAM on Optimization可以搏一下 但
是他也不敢保证能被接收 下面考虑一下二线Journal Optimization Methods
and Softwares , Operations Research Letters, European Journal of
Operations Research, Linear Algebra and its applications. 老板问我想投哪
个 我也是第一次投论文 懂个鬼啊, 遂上来请教各位牛人。 对于我来说,当然
是希望journal越牛越好,还期待这篇论文能帮我申请到牛校的IEOR的PHD呢。 大牛说
说哪个二线journal看起来更“牛”。
d*******e
发帖数: 1649
27
古今数学思想很不错,算是经典读物了。楼主能看到第二册,十分不容易,值得鼓励。
我发现回复的多集中在分析的读物一块,其实代数和拓扑也挺有意思的。理论数学的美
在代数和拓扑里面有着集中的体现,如果有时间而且对数学有兴趣的话最好一定要看一
看。
代数主要指抽象代数,或者近世代数(abstract algebra/modern algebra),都是一
个东西。群 环 域是主要内容,理解了以后相信您对数学会有着更深刻的认识。拓扑的
话点集拓扑比较容易上手和易懂,各色的空间非常美妙。微分几何也很不错,会改变对
世界的认识。
当然这些都是阳春白雪的东西,不要指望能弄懂所有。但这些都是数学类本科的基础课
程。以后您会知道,数学并不光都是analysis和吉米多维奇,只要会作证明和有基本的
线性代数,数学分析知识,数学的美另有洞天。
t*******t
发帖数: 105
28
来自主题: Mathematics版 - 求答案书
numerical linear algebra 和linear algebra有什么区别?
p****o
发帖数: 13
29
I suggest amateurs pay more attention to algebra, geometry, topology and
number theory. One can't "get the point" of modern mathematics at all by
starting with calculus which is probably the only "advanced" mathematics known to most people.
Try to read an abstract algebra book and see if you can understand galois theory, for example.

Linear
c*******v
发帖数: 2599
30
来自主题: Mathematics版 - 历年中国参加IMO选手详细去向
In chinese media,why should a differential geometer say very good thing
about Wang Song,a algebraic number theoryer?

I do not quite buy it.
1: Wang Song is working on algebraic number theory. Why should he be
interviewed by Yau, a differential
geometer, for a postdoc position?
2: Indeed, Yau said some very good things about Wang Song in chinese media,
though he did not mention
Wang's name explicitly.
From what I heard, I believe Yau is actually a strong supporter of Wang,
Song.
s******h
发帖数: 539
31
来自主题: Mathematics版 - 问一个初级概率题
Nod.
Denote the sigma algebra generated by any random variable X by \sigma,
by definition
\sigma = \{ X^{-1}(A) | A \in B(R)\}, where B(R) is the borel sigma
algebra.
Since g is a one-to-one Borel measurable function,
\{{g(X)}^{-1}(A) | A\in B(R) \} = \{X^{-1}(A) | A \in B(R)\},
i.e. \sigma< X > = \sigma< g(X)> .
QED.

g
m******0
发帖数: 33
32
Jacob Lurie Named Professor of Mathematics at Harvard
Cambridge, Mass. - December 18, 2008 - Mathematician Jacob Lurie, whose
expertise ranges across algebraic geometry, topology, and algebra, has been
named professor of mathematics in Harvard University's Faculty of Arts and
Sciences, effective July 1, 2009.
Lurie, 31, was previously associate professor of mathematics at the
Massachusetts Institute of Technology, a position he has held since 2007.
"Professor Lurie is a mathematician of impressi
g****t
发帖数: 31659
33
正教授,太牛了。
Harvard总共也就10几个正教授吧。

Jacob Lurie Named Professor of Mathematics at Harvard
Cambridge, Mass. - December 18, 2008 - Mathematician Jacob Lurie, whose
expertise ranges across algebraic geometry, topology, and algebra, has been
named professor of mathematics in Harvard University's Faculty of Arts and
Sciences, effective July 1, 2009.
Lurie, 31, was previously associate professor of mathematics at the
Massachusetts Institute of Technology, a position he has held since 2007.
"Professor Lurie
m******0
发帖数: 33
34
weyl conjecture,mordel conjecture, Milnor conjecture说明玄学还是有价值的啊
。不是太玄,是不够玄,我们要更玄,现在的什么非交换代数几何,homotopical
algebraic geometry,都没有脱离Grothendieck的思想,没有新的突破,derived
algebraic geometry是一场革新,新观念的引入才能 help solving old unsolved
problems,
Dennis Gaitsgory,Kevin Costello,Mike Hopkins这样的牛人,最近的工作也要受
Jacob Lurie 工作的启发。

some
m****n
发帖数: 142
35

还是没有回答问题嘛---到底derived algebraic geometry 是已经解决了一些长久
以来用别的方法都
解决不了的问题呢?如果是,请列举是什么问题。
还是目前只是期待它解决。
当年老毛子VLADIMIR VOEVODSKY 的东西也极度抽象,但是解决了 Milnor conjecture,

在derived algebraic geometry 解决了这种级别的问题没有?这个才是要问的问题。
m****n
发帖数: 142
36
"rewriting the Grothendieck theory of algebraic geometry, using ∞-
category" ?? 这个是谁给出的评价?人名?出处?
“obvious importance”-----请具体解释一下,derived algebraic geometry 的
motivation? 用处?这个理论到底重要在哪里?为什么它的重要性是obvious的?
不要来虚的语言,讲有多么多么重要,Lurie有多么多么牛,他很牛我们知道,呵呵。来点儿干货,解释清楚一点,具体
一点。
谢谢!

theory
m******0
发帖数: 33
37
来自主题: Mathematics版 - Masterclass with Jacob Lurie
Masterclass with Jacob Lurie:
Elliptic Cohomology and Derived Algebraic Geometry
The Strategic University Program in Pure Mathematics (Suprema) at the
Department of Mathematics, University of Oslo, organizes a Masterclass with
Jacob Lurie in August-September 2006, on Elliptic Cohomology and Derived
Algebraic Geometry. Lurie holds the 2004 American Institute of Mathematics
Five-Year Fellowship, and works at Harvard University.
The masterclass will consist of a series of introductory lectures over
m******0
发帖数: 33
38
来自主题: Mathematics版 - Masterclass with Jacob Lurie
Masterclass with Jacob Lurie:
Elliptic Cohomology and Derived Algebraic Geometry
The Strategic University Program in Pure Mathematics (Suprema) at the
Department of Mathematics, University of Oslo, organizes a Masterclass with
Jacob Lurie in August-September 2006, on Elliptic Cohomology and Derived
Algebraic Geometry. Lurie holds the 2004 American Institute of Mathematics
Five-Year Fellowship, and works at Harvard University.
The masterclass will consist of a series of introductory lectures over
p****o
发帖数: 13
39
来自主题: Mathematics版 - 纯数学哪个领域最难?
分析:Non-linear PDE. Toughest of the toughest. Obviously beyond human
ability.
代数:Let's check the buzzwords... Motivic Stuff,Quantum Stuff,Non-
commutative Stuff,Homotopic Stuff,Categorified Stuff. So, how about
Derived Motivic Non-commutative Homotopic Chromatic Higher q-Algebra?
几何:See algebra and analysis.
逻辑:This is not really a very "mathematical" topic...
数论:Stuffs related to the zeta function. On the other hand, everything is
related to the zeta function.
g****t
发帖数: 31659
40
来自主题: Mathematics版 - 纯数学哪个领域最难?
逻辑和代数接近的那部分还是很有用的。
好猛得的线性PDE书上就有一些基本结论是逻辑的定理证明的。

分析:Non-linear PDE. Toughest of the toughest. Obviously beyond human
ability.
代数:Let's check the buzzwords... Motivic Stuff,Quantum Stuff,Non-
commutative Stuff,Homotopic Stuff,Categorified Stuff. So, how about
Derived Motivic Non-commutative Homotopic Chromatic Higher q-Algebra?
几何:See algebra and analysis.
逻辑:This is not really a very "mathematical" topic...
数论:Stuffs related to the zeta function. On the other hand, everything is
related to the
s*******n
发帖数: 740
41
Applied Math PhD的课程和 Pure Math两码事吧
但最基本的real analysis,algebra之类的都需要
我学校的要求是
The student must pass two written examinations, one chosen from the group:
* i.(a) Real Analysis
* i.(b) Complex Analysis
and the second chosen from the group:
* ii.(a) General Algebra
* ii.(b) Manifolds and Topology
* ii.(c) Riemannian Geometry
本科非数学的其实还是不好搞定的
z*****i
发帖数: 389
42
来自主题: Mathematics版 - 挖坑:哪门数学分支最难?
Algebraic Geometry and Algebraic Topology
k******i
发帖数: 25
43
来自主题: Mathematics版 - 挖坑:哪门数学分支最难?
大学学生。。。
目前感觉Algebraic Topology入门很难
Abstract Algebra也很难
H*****s
发帖数: 32
44
来自主题: Mathematics版 - 10年的fields现在有候选么
Christopher Hacon is algebraic geometer in Utah. He proved the finite
generation of canonical ring of algebraic varieties(of general type?). He
also has some other results related to pluricanonical maps.
But compare to Mori, his work is trivial.
f********l
发帖数: 83
45
来自主题: Mathematics版 - 算子代数有什么好的书吗
Fundamentals of the Theory of Operator Algebras, VolI,by John R. Ringrose
Richard V. Kadison
C*-Algebras and Operator Theory,by Gerard J. Murphy
f******h
发帖数: 104
46
来自主题: Mathematics版 - 代数群问题
Linear Algebraic Groups
James E. Humphreys
an exercise on p.57
A closed subset of a linear algebraic group
which contains e (the identity element) and
is closed under taking products is a subgroup.
c*******d
发帖数: 353
47
来自主题: Mathematics版 - 关于线性代数的教材翻译
我是学物理的背景,一直以来深感自己代数底子薄弱,最近读了(包括做习题)两本线
性代数的书,收获很大。分别是:
http://www.amazon.com/Matrices-Linear-Algebra-Advanced-Mathematics/dp/0486660141/
http://www.amazon.com/Matrices-Linear-Transformations-Charles-Cullen/dp/0486663280/
以前读过shilov的线性代数,被苏联人的重剑无锋雷倒,没有读完:
http://www.amazon.com/Linear-Algebra-Georgi-E-Shilov/dp/048663518X/
我感觉国内高等数学对于线性代数乃至代数的教育投入太差,过于偏重分析和微积分的
机械训练,没有对代数足够重视。我很想翻译前面两本书,但是希望能找到一定的经费
,如果有人知道如何着手,请不吝赐教!
我认为如果能让本科生接触到这些教材,对他们将来的发展是有很大好处的。
e*******6
发帖数: 13
48
来自主题: Mathematics版 - 牛教授上课不好,郁闷
牢骚贴,在Penn读本科。这学期本来要上abstract algebra,教授是个俄国老头
alexandre kirillov.选课之前查了一下他,似乎比较牛,还小开心了一下,以为这门
课会比较精彩...
第一天,我兴冲冲跑进教室,然后就看到一个面目和蔼,肚子大大的俄国老爷爷。结果
他一开口我就晕了,非常厚重的俄国英语,竖着耳朵也很难听懂。接下来更搞笑,老爷
爷开始用他的俄式英语讲述他的成年往事和数学学习方法,一讲就是一个小时。我一路
听得迷迷糊糊的,就快到下课时间了.老爷爷突然掏出一叠作业,发给每人一张。我拿
到一看,大汗,4道题目有3道看不懂。其中有2道bilinear form vector space在
linear algebra里面没有讲过,应该是他在这门课里面讲的。接着他发下几张category
theory讲义,说:你们把这个看完,作业第四题要用这个做,还有,我下星期要去加
州开会,下节课取消,你们再下一节课就要交作业。我们所有人大汗
- -!
下课以后我赶紧去查Penn Professor Review,是个校内教授评分系统。4分是最高分,
结果我发现Kirill
z****e
发帖数: 2024
49
来自主题: Mathematics版 - 请教:algebra VS. sigma algebra
瞻仰大侠风采。
本人才学分析,有些思维方式还没有建立。
多谢指点。
你这不当faculty就浪费了,虽然有不小难度。
q*****g
发帖数: 1568
50
来自主题: Mathematics版 - 包子问个概率/泛函题
这不是显然的吗?F_infty 其实就是[0,1/2)上的Borel sigma-algebra并上[1/2,1)上
的trivial sigma algebra. 你把X写成[0,1/2)和[1/2,1)两个branches,结果不就出来
了。
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