Centralizers and Normalizers Part 1

[@דניאל-ט9ד]

Elliot, you are the best. you have been extremely helpful for me and my semester. I don't know what I would have done without you videos. cheers from TAU, Israel.

[@paul21353]

Elliot, I like your videos a lot. You are a natural as a teacher. And I ought to know, having tought maths for over 30 years. Two things I would like you to consider. 1. If you underline almost everything the underlining loses its function, i.e. drawing attention to the most important things in your lesson. As always, less is more. 2. Why do you not use the one step subgroup test? It saves work. Keep up the good work. You have got a new subscriber. Greetings, Remco.

[@David-cx3fc]

This is an amazing explanation.. thank you for making this video

[@unkownuser1042]

Sir ....thank you so much for sharing..it means a lot

[@matron9936]

Wow your channel is awesome!

[@ninosawbrzostowiecki1892]

nicely done video, you got a new subscriber!

[@aryanghotra9246]

thank you!! this was really helpful

[@raylittlerock3940]

It seems to me that for all g belonging to the centralizer, we have : ag=ga. If this is true, it allows to prove the existence of inverses in the centralzer. ( manely : g'ag'' = g'ag= g'ga = a ) Also, it would explain why the subgroup deserves its name.

[@amiefall1444]

Thank you! It was really helpful :)

[@gagansky7573]

*what is all this happening?*

[@avy0010]

Wtf ?