24小时热门版块排行榜

>论坛更新日志 (4468)
>基金申请 (355)
>文献求助 (304)
>硕博家园 (182)
>导师招生 (172)
>虫友互识 (162)
>招聘信息布告栏 (128)
>休闲灌水 (114)
>论文投稿 (100)
>论文道贺祈福 (85)
>博后之家 (76)
>考博 (64)
>找工作 (61)
>教师之家 (35)
>职场人生 (34)
>考研 (32)

返回列表

【奖励】本帖被评价6次，作者gyliu增加金币 5.5 个

当前主题已经存档。

gyliu

铁杆木虫 (职业作家)

应助: 335 (大学生)
金币: 16377.7
帖子: 3258
在线: 513小时
虫号: 327449

[资源] Groups and Symmetry

M. A. Armstrong “Groups and Symmetry"
Springer | 1997-02-27 | ISBN: 0387966757 | 200 pages | PDF | 5,2 Mb

Groups are important because they measure symmetry. This text, designed for undergraduate mathematics students, provides a gentle introduction to the vocabulary and many of the highlights of elementary group theory. Written in an informal style, the material is divided into short sections, each of which deals with an important result or a new idea. Throughout the book, emphasis is placed on concrete examples, often geometrical in nature, so that finite rotation groups and the 17 wallpaper groups are treated in detail alongside theoretical results such as Lagrange's theorem, the Sylow theorems, and the classification theorem for finitely generated abelian groups. A novel feature at this level is a proof of the Nielsen-Schreier theorem, using groups actions on trees. There are more than 300 exercises and approximately 60 illustrations to help develop the student's intuition.

http://depositfiles.com/en/files/5079872
http://w14.easy-share.com/1700284066.html