# 留言板

[72]suigr   2012-12-4 15:34

[71]科学网编辑部   2012-11-23 22:10

[70]俞立   2012-11-7 11:25

http://www.encyclopediaofmath.org/index.php/Proof

A reasoning conducted according to certain rules in order to demonstrate some proposition (statement, theorem); it is based on initial statements (axioms). In practice, however, it may also be based on previously demonstrated propositions. Any proof is relative, since it is based on certain unprovable assumptions. Rules of conducting a reasoning and methods of proof form a main topic in logic. See Proof theory.

How to Cite This Entry:
Proof. A.S. Kuzichev (originator), Encyclopedia of Mathematics. URL: http://www.encyclopediaofmath.org/index.php?title=Proof&oldid=18441

《数学百科全书  维基百科，自由的百科全书》

[69]hejialin   2012-10-15 07:37

《重新解释变压器的工作原理》：http://blog.sina.com.cn/s/blog_5c45148601013thb.html
《重新解释发电机的磁场作用力》：http://blog.sina.com.cn/s/blog_5c45148601013tgx.html
《静电的物理新概念》：http://blog.sina.com.cn/s/blog_5c45148601013t63.html
[68]蒋迅   2012-10-11 10:22
http://xuefuzi.com/post-542.html 数学酷站推荐——在线真随机数生成器

[67]杨学祥   2012-9-29 14:39

[66]张檀琴   2012-9-29 13:33

[65]罗教明   2012-9-29 11:47

[64]董明   2012-9-29 02:02

[63]wqzhi   2012-9-18 10:38

《统一无穷理论》评论园地的新地址：
http://wenqinghui163.blog.163.com/

http://blog.tech110.net/
[62]罗庆云   2012-9-17 16:44

《风能利用与地球自转变慢》

[61]hailang0   2012-9-15 17:01

[60]李天成   2012-9-10 21:39

[59]张檀琴   2012-9-8 14:21

[58]cctvScience   2012-7-11 11:56

[57]cctvScience   2012-7-11 11:48

[56]cctvScience   2012-7-11 11:43

[55]cctvScience   2012-7-11 11:28

[54]fansg   2012-7-1 16:01

http://user.qzone.qq.com/807479909/main#!app=4

[53]孟静   2012-6-28 18:26

## 杨正瓴

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