Abstract Algebra | Group of Units modulo n

We sketch a proof that the equivalence classes of integers which are relatively prime to n form a group. This group is called the group of units modulo n.
www.michael-pen...

[@PunmasterSTP]

Abstract? More like add that, to the list of phenomenal videos on UA-cam. Thanks for sharing!

[@georgesadler7830]

Professor Penn, thank you for a fantastic lecture on Groups of Units modulo n in classic Abstract Algebra/ Number Theory.

[@caffeineiv4335]

Outstandingly clean and sharp communication. Thank you

[@deuteriumtritium9700]

Is there a group theory playlist?

[@danielgagliardi727]

There is an abstract algebra playlist

[@rizalpurnawan23]

Please create a video proof that for n = 2, 4, p^k, 2p^k, (Z/nZ, ×) is cyclic.

[@kapkarakoyun]

Thank you I am self studying