Order of Elements in a Group | Abstract Algebra

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  • Опубліковано 11 жов 2024

КОМЕНТАРІ • 21

  • @WrathofMath
    @WrathofMath  Рік тому

    I previously had a video on this, but I used a needlessly complicated definition which made the lesson a few minutes longer than it needed to be. So I redid it.

  • @keldonchase4492
    @keldonchase4492 Рік тому +1

    Thanks for the videos; they are immensely helpful!!!
    Question about the example presented at 4:40:
    The way I look at it is:
    Cycle 1:
    Start with 1:
    1 --> 6 (1)
    6 --> 4 (2)
    4 -> 2 (3)
    2 -> 1 (4)
    I started with 1 and ended with 1 so to get back to 1, I had to make 4 “jumps” so 4 is a possible answer for our order.
    Cycle 2:
    Skip all the numbers covered in Cycle 1 so I start with 3.
    3 --> 3 (0)
    Since 3 maps to itself, I do not consider a “jump”.
    0 would be a possible answer but since it is non-positive, I can eliminate it as a possibility.
    Cycle 3:
    5 --> 5 (0)
    Again, not a “jump” because 5 maps to itself.
    Again, 0 can be eliminated as a possibility since it is non-positive.
    So that is why the order is 4.
    Is this way of thinking correct or is there something important I’m missing?
    Thank you!!

  • @Dravignor
    @Dravignor 6 днів тому

    If e is the identity element of G, and e is also a power of some a ∈ G, then can we say ord(e) = 0, or is it ord(e) = 1 because the order of an element is strictly for non-zero positive integers?
    Edit: Nevermind I watched the next video

  • @MrCoreyTexas
    @MrCoreyTexas 2 місяці тому

    I was wondering why not 0 for the order, and the reason it is not 0 is because every element to the 0th power is the identity element, so it has to be a positive integer to be non trivial

  • @summerhunt77
    @summerhunt77 5 місяців тому

    Thank you.

  • @mgyodzs1
    @mgyodzs1 6 місяців тому

    Good explanation! Keep going, You do good job.

  • @HorenKriz
    @HorenKriz Рік тому

    So helpful thanks

  • @iraqi-ff9690
    @iraqi-ff9690 10 місяців тому

    Thank u so much 🖤

  • @NathalieBertrandCortez
    @NathalieBertrandCortez 7 місяців тому

    very interesting

  • @punditgi
    @punditgi Рік тому +1

    You can never go wrong with Wrath of Math!

  • @jialinding9636
    @jialinding9636 10 місяців тому

    The frog is the icing on the cake.

  • @naruhitoabiku9451
    @naruhitoabiku9451 8 місяців тому

    i love you

  • @InoceramusGigas
    @InoceramusGigas Рік тому

    Hi W.O.M
    Would love some videos on ramsey theory!
    Could be a great fit in your graph theory playlist, or just within a general combinatorics theme.
    There is definitely room for a more intuitive explanation on UA-cam.
    Love the Abstract algebra vids.

  • @nyxiiestelle
    @nyxiiestelle 2 місяці тому +1

    am i the only one who couldn't understand this 😭😭? I'm feeling very dumb, i watched it so many times and still can't get it well idk why🥹!! ( I'm a math major)