Abstract Algebra 9.1: Normal Subgroups

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In this video, we define what it means for a subgroup to be normal in a group, and look at a few examples.
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Studying for finals and I wish I saw your videos earlier. You explain it way better than my professor does who has me confused constantly.

garyyip
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Sir could iu pls post videos on normal subgroups of s4 and D8

csechandrasekhar
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Thank you so much for all these videos, Patrick! I've been self-teaching abstract algebra for a while now and this playlist has been indispensable! AA is such a cool branch of math - at first it seems pretty mundane - you start with some basic theorems and definitions, you manipulate them a bit and produce some corollaries. But then, all of a sudden you find these glimmers of intrinsic beauty that make mathematics so special!

johndavies
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Sir if you explain the permutations multiplication in cycles i.e (12)(123) and make a lecture on explanation of this mathod .then I, m thankful to you . Plzzz ....

hamzashah
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