Group Theory 31, Automorphisms and Inner Automorphisms

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Group Theory 31, Automorphisms and Inner Automorphisms
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I am following your presentations with a great pleasure. I congratulate you for your excellent job done in these videos. Forgive me, but I may have not understood your rotations by 90 degree. In my understanding if it is right you would have two identities because R90 times R90 = R90 !! (so Id ={R0, R90} ) But in fact, I think the correct is R90 times R90 you would get R180 !! And so on !! (I refer to the previous video).

lbomcarvalho
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Inner automorphisums and automorphisum example one more video better as little confusion in dihedral group done

sriramvaidyanathan
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good info, but the sound quality is terrible.

louisamann