Properties of Normal Subgroups
Channel: Andrew Misseldine
Date: 2020-11-18

In this video, we prove that subgroups are index 2 are normal and we prove that normal subgroups are exactly those closed under conjugation.

This is lecture 30 (part 2/5) of the lecture series offered by Dr. Andrew Misseldine for the course Math 4220 - Abstract Algebra I at Southern Utah University. A transcript of this lecture can be found at Dr. Misseldine's website or through his Google Drive at: 
https://drive.google.com/file/d/1gVg95bRVAbuPB4WF6xQIWAdlZNLvQYhJ/view

This lecture is based upon Section 10.1 of Abstract Algebra: Theory and Applications (http://abstract.ups.edu/) by Tom Judson. Please post any questions you might have below in the comment field and Dr. Misseldine (or other commenters) can answer them for you. Please also subscribe for further updates.