Complex Analysis 9 | Power Series

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  • Опубликовано: 2 фев 2025

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  • @leonilsonnunes3755
    @leonilsonnunes3755 3 года назад +20

    I always stay anxious for next video of this channel. These videos are true Math classes.

    • @hyperduality2838
      @hyperduality2838 2 года назад

      Convergent is dual to divergent -- power series are dual!
      Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
      Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
      Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
      Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
      "Always two there are" -- Yoda.

  • @thermrm
    @thermrm 2 года назад +5

    Thank you so much for making these videos. I'm a physics student, and these concepts aren't taught this well.
    Also, your handwriting is so neat!
    love from Palestine

    • @hyperduality2838
      @hyperduality2838 2 года назад

      Convergent is dual to divergent -- power series are dual!
      Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
      Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
      Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
      Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
      "Always two there are" -- Yoda.

  • @rob5467
    @rob5467 3 года назад +25

    It would be great to see the details of the proof you reference in the video

  • @NewDeal1917
    @NewDeal1917 3 года назад

    00:00 Intro
    0:57 Why power series are important? Example of exp(z)
    2:05 General definition for C
    4:03 Example. Geometric series + conditions for convergence
    9:06 Cauchy-Hadamard theorem

    • @hyperduality2838
      @hyperduality2838 2 года назад

      Convergent is dual to divergent -- power series are dual!
      Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
      Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
      Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
      Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
      "Always two there are" -- Yoda.

  • @jesusjaviervidalesperez5238
    @jesusjaviervidalesperez5238 2 года назад +9

    i need the proof of that elegant fact

  • @mariolemelin27
    @mariolemelin27 6 месяцев назад +1

    As always, great videos. Could you give us a link here to the proof of the nice result (8:48) as a pdf. Thank you in advance!

    • @brightsideofmaths
      @brightsideofmaths  5 месяцев назад +1

      Good idea. I have my real analysis book where you find a very similar result. But I can also prepare a video or pdf here. It will take some time.

    • @mariolemelin27
      @mariolemelin27 5 месяцев назад

      @@brightsideofmaths A pdf would be enough I think! That would be already great.

    • @brightsideofmaths
      @brightsideofmaths  4 месяца назад +1

      The proof is now written down in the book about this course. The book is not finished yet, but supporters can already download the preview.

  • @JojiThomas7431
    @JojiThomas7431 3 года назад +1

    Good videos. Really understood the concept

    • @hyperduality2838
      @hyperduality2838 2 года назад

      Convergent is dual to divergent -- power series are dual!
      Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
      Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
      Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
      Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
      "Always two there are" -- Yoda.

  • @TrongNguyen-sz4wr
    @TrongNguyen-sz4wr 4 месяца назад

    thanks very much, teacher. Its really help me a lot :)

    • @brightsideofmaths
      @brightsideofmaths  4 месяца назад

      You are really welcome. Please also check the pdf version of this video :)

  • @khalidmohammadjama
    @khalidmohammadjama 3 года назад +1

    Another nice job 👍

  • @AJ-et3vf
    @AJ-et3vf 2 года назад

    Great video! Thank you!

  • @darrenpeck156
    @darrenpeck156 2 года назад +3

    I would very much like to see the proof.

  • @manswind3417
    @manswind3417 Год назад

    Hey! Fantastic video, really well-made and comprehensive, and easy to understand as well. I have one request tho, if possible please include proofs of the theorems you mention (such as Cauchy Hadamard, or that power series converge in a ball), or at least provide some links for the same. Much appreciated, thanks!

    • @brightsideofmaths
      @brightsideofmaths  Год назад

      Thank you very much. Most stuff about power series is proved in my real analysis course: tbsom.de/s/ra

    • @brightsideofmaths
      @brightsideofmaths  4 месяца назад

      I am also writing a book for this course, which supporters can already download. There, I fill in all the details.

  • @darthtleilaxu4021
    @darthtleilaxu4021 3 года назад

    Power Series...?! Haaaa ! "Séries entières" !
    Thanks for the video!

  • @omkardwivedi513
    @omkardwivedi513 3 года назад +1

    HEY NICE JOB . I AM YOUR GREAT ADMIRER.
    PLEASE MAKE VIDEOS FOR GEOMETRY FROM (EUCLID TO COORDINATE TO MODERN ONE)

  • @higifnr
    @higifnr 2 года назад

    I have a friend that is studying abroad in Germany and when he showed me the Cauchy-Hadamard limit I was kinda confused because we use the d'Alembert rule and it seems to be a lot simpler. Any reason why to use C-H over it?

    • @brightsideofmaths
      @brightsideofmaths  2 года назад

      The root criterion is more general than the quotient criterion, which you mean I suppose?

    • @higifnr
      @higifnr 2 года назад

      @@brightsideofmaths
      Yeah I meant lim |an+1/an| = 1/R
      Can you please give me an example of how this criterion is limited? 😊

    • @brightsideofmaths
      @brightsideofmaths  2 года назад

      You cannot apply it immediately if some sequence members are zero, can you?

  • @masteroogway7624
    @masteroogway7624 3 года назад +2

    Does anyone know how he makes these presentation?

    • @brightsideofmaths
      @brightsideofmaths  3 года назад +5

      I know it!

    • @masteroogway7624
      @masteroogway7624 3 года назад

      @@brightsideofmaths willing to share? XD

    • @brightsideofmaths
      @brightsideofmaths  3 года назад +1

      @@masteroogway7624 Sure. I use Xournal :)

    • @masteroogway7624
      @masteroogway7624 3 года назад

      @@brightsideofmaths thank you very much!
      I am an aspiring teacher and your videos have helped me organise so much.
      If you have time and are intested, I would love to see your work process for these videos, they are incredible!

    • @hyperduality2838
      @hyperduality2838 2 года назад

      @@brightsideofmaths Convergent is dual to divergent -- power series are dual!
      Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
      Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
      Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
      Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
      "Always two there are" -- Yoda.
      Energy is duality, duality is energy
      Everything in physics is made from energy including mathematics!

  • @hyperduality2838
    @hyperduality2838 2 года назад

    Convergent is dual to divergent -- power series are dual!
    Syntropy is dual to increasing entropy --the 4th law of thermodynamics!
    Analysis or wholes become parts is an entropic process or reductionist process -- divergent.
    Synthesis or parts become wholes is a syntropic process, or a holistic process -- convergent.
    Noumenal (analytic, rational) is dual to phenomenal (synthetic, empirical) -- Immanuel Kant.
    "Always two there are" -- Yoda.

  • @yomo_13
    @yomo_13 11 месяцев назад

    Plz make the prove

    • @brightsideofmaths
      @brightsideofmaths  4 месяца назад +1

      It's in my book, which you can download for free as a supporter.

  • @ayaayout1202
    @ayaayout1202 3 года назад

    Hello
    May i have your email ? I would like to ask you few questions .