Abstract Algebra 1.6 : Subgroups, Lagrange's Theorem, and the Center

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In this video, I introduce Lagranges theorem, using it and other facts to prove many things about groups and their subgroups. I then introduce the center of a group and use it to prove that groups of order prime squared (|G| = p^2) are abelian.

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Imagine if fematika was pointed out in the 3b1b video!

hamadosman
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I just want one thing
can you improve your have not been able to understand what you are writing with your handwriting in a past few videos

mmukulkhedekar