[双语字幕] 史上最好的群论入门

转载自：https://www.youtube.com/watch?v=KufsL2VgELo
这是这个网站上最干货的群论入门视频。如果你像我一样是个计算机科学家，并且总是好奇群论为什么能这么好用，甚至感叹这个世界上为什么会存在这种神物，却不想花费数个小时来学习群论的基础，那么这个视频很适合你。这个视频覆盖了群论的所有基础知识，从群论的历史，到子群为何能平分整个群，再到所有的阶为素数的群的类型。
This is the most information-dense introduction to group theory you'll see on this website. If you're a computer scientist like me and have always wondered what group theory is useful for and why it even exists and furthermore don't want to bother spending hours learning the basics, this is the video for you. We cover everything from the basic history of group theory, over how and why subgroups partition groups, to the classification of all groups of prime order.

Babai的演讲可以在这里找到：国内开不了，我另外上传了，看我主页
Babai's talk can be found at: http://people.cs.uchicago.edu/~laci/2...

0:00 Intro
1:42 Abstract Algebra
4:28 Group Theory
8:01 Z Q Zn Dn
14:29 Proofs
18:58 Subgroups & Cosets
25:31 The Theorem
29:11 Classification of Groups of Prime Order