Start Learning Reals 1 | Cauchy Sequences

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  • Опубліковано 29 гру 2024

КОМЕНТАРІ • 28

  • @maohejiang6485
    @maohejiang6485 2 роки тому +8

    If a video is good, you might be jealous and don't want to share it. But these videos are not "good" anymore, they are fantastic and wonderful, something beyond good, making it a shame not to share them. Thank you for making these great videos, sir, I really can't show more my appreciations.

  • @Mgggggggggggggggggggggg
    @Mgggggggggggggggggggggg 3 роки тому +10

    After watching the first video, I really have a good feeling that this channel will help me understand maths!

  • @nawalmc
    @nawalmc 2 роки тому +7

    Thank you for these awesome videos. They're such awesome bite-size chunks. I really struggled so much with understanding these fundamentals years back when I just started uni I felt so overwhelmed back then. But these videos are just perfect. A second chance.Thank you!

  • @zazinjozaza6193
    @zazinjozaza6193 3 роки тому +7

    Nice, I'm excited for this. I never understood the construction of the Reals as well as I would like.

  • @rasiqulislam1057
    @rasiqulislam1057 3 роки тому +6

    Sir please continue this series

  • @JDMathematicsAndDataScience
    @JDMathematicsAndDataScience 3 роки тому +8

    I really appreciate your videos. I would love to see some very rigorous probability theory if you have time. I am not sure what topic it is called.

  • @pebotin
    @pebotin 3 роки тому +2

    Very nice presentation..thanks for uploading..

  • @一一-y1c
    @一一-y1c Рік тому

    Amazing video for understanding the construction of the reals with the cantor method comparing to the traditional dedekind cut method

  • @juansalvadordomandl5287
    @juansalvadordomandl5287 Рік тому

    This is extremely useful and precise, i'm following your videos and trying to formalize this with a proof assistant (Agda) and i mechanize all this thanks of this videos being somewhat formal already. Thanks.

    • @brightsideofmaths
      @brightsideofmaths  Рік тому +1

      Glad it was helpful! :)

    • @juansalvadordomandl5287
      @juansalvadordomandl5287 Рік тому

      I subscribed! I'm going to watch your other videos, I'm a computer scientist so don't really know about much more than discrete maths. Greetings from Argentina!@@brightsideofmaths

  • @madaaz6333
    @madaaz6333 3 роки тому +2

    I love it!

  • @doncney
    @doncney 2 роки тому

    I love your videos!! You probably single handedly handed my degree to me

  • @ahmedamr5265
    @ahmedamr5265 Рік тому

    Great video!
    Just one question: when you mention that one can pick any small section of the line where the distance from left to right is just given by epsilon and only finitely many points would lie outside, this epsilon interval must have at its center the limit point of the sequence, right? Because I don't see that applicable if I pick a small epsilon interval around x_1 for instance.

    • @brightsideofmaths
      @brightsideofmaths  Рік тому

      The center is not so important. It's important that the limit point lies inside :)

    • @ahmedamr5265
      @ahmedamr5265 Рік тому

      Thank you very much! Your channel is brilliant and extremely useful

  • @marcocenci
    @marcocenci Рік тому

    Everything in this channel is fantastic, thanks!
    But, as a non mathematician, I wonder why we need something like Cauchy series o Dedekind cuts in a math course, if we all agree the existence of irrational numbers is axiomatic...

    • @brightsideofmaths
      @brightsideofmaths  Рік тому

      The existence is a consequence of the axioms. That's why we need Cauchy sequences and so on.

  • @2002budokan
    @2002budokan 2 роки тому +2

    I want to share another definition for absolute value that I saw in an Analysis book. |x| = max(x, -x). I think this definition is much eleganter.

  • @jamesyeung3286
    @jamesyeung3286 3 роки тому +4

    *angry wildberger sounds*

  • @oldsachem
    @oldsachem 16 днів тому

    What is a "number field"?