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Thursday, June 8, 2017

Advanced Knowledge Problem of the Week: 6-8-17 [Abstract Algebra]

Check out this #AKPotW, and be sure to let us know what you think in the comments below or on social media!




Solution below the break.

Solution:
Video:

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2 comments:

  1. David EisnerJune 8, 2017 at 2:14 PM

    Here's a one-line proof (from "Baby Rudin", I think):

    -(-a) = 0 + -(-a) = (a + -a) + -(-a) = a + (-a + -(-a)) = a + 0 = a

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  2. UnknownAugust 7, 2020 at 12:47 PM

    (A')'=A please sir solve this one also

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