Ron & Math
Ron & Math
  • Видео 26
  • Просмотров 677 120
Feynman's Technique For Dummies
This video was sponsored by Brilliant. To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/Ron . You’ll also get 20% off an annual premium subscription.
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References
1. Zacky's blog: zackyzz.github.io/index.html
2. Cantor's Paradise: www.cantorsparadise.org/richard-feynmans-integral-trick-e7afae85e25c/
3. Leo Goldmakher's article: web.williams.edu/Mathematics/lg5/Feynman.pdf
4. This nice answer: math.stackexchange.com/questions/390850/integrating-int-infty-0-e-x2-dx-using-feynmans-parametrization-trick
5. And this answer for the side quest: math.stackexchange.com/questions/2931388/integration-of-ln-sin-x-from-0-to-frac-pi2-by-duis
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Timeline
0:00 Introduction...
Просмотров: 7 003

Видео

What's In The Rabbit Hole Of YouTube Video IDs?
Просмотров 7047 месяцев назад
Timestamp: 0:00 The number is wrong 0:54 Base64 counting system 2:06 A conversation in 2004 3:02 DES and 3DES encryption 5:20 An imaginary security risk 6:48 Birthday paradox 8:05 Estimating the size of RUclips References: The Hackernews post: news.ycombinator.com/item?id=25302558 The Sweet32 attack explained: sweet32.info/ The paper on sampling RUclips: journalqd.org/article/view/4066/3766 The...
Spectral Graph Theory For Dummies
Просмотров 61 тыс.8 месяцев назад
To try everything Brilliant has to offer-free-for a full 30 days, visit brilliant.org/Ron . You’ll also get 20% off an annual premium subscription. This video was sponsored by Brilliant. References: 1. Cornell University Lecture Note: people.orie.cornell.edu/dpw/orie6334/Fall2016/lecture7.pdf 2. Spectral Graph Theory Lecture by Steve Butler: www.stevebutler.org/spectral2023 3. Spectral Graph Th...
Animate Commenters' Solutions: An Escaping Frog
Просмотров 6189 месяцев назад
The post: ruclips.net/user/postUgkxsDLurSbaFOnvCNNf3fDT0ER7FLAGAlMp Timeline: 0:00 Question Introduction 1:02 Linear Equations Solution 2:25 Exponentiating Transition Matrix 5:04 Simulation is Always a Way
The Solution in Your Mind is The Only One
Просмотров 16 тыс.9 месяцев назад
Egyptian fractions are simple to understand and fascinating to play with. This video serves as a primer for this beautiful domain of work. References: 1. r-knott.surrey.ac.uk/Fractions/egyptian.html 2. oeis.org/A006585 3. en.wikipedia.org/wiki/Egyptian_fraction 4. brilliant.org/wiki/egyptian-fractions/ Timeline 0:00 Primer 1:00 Egyptian Fraction Expansion 1:23 Solution for Expansion of 1 with A...
A Countable Introduction To Infinity
Просмотров 2,5 тыс.9 месяцев назад
Infinity is one of the most fascinating topic in mathematics. I hope this video serves as a gentlest, jargon free introduction to infinity without losing too much rigorousness. 0:00 Dirichlet's Working Schedule 0:36 The Intuition for the Sizes of Rational and Irrational Numbers 3:24 Cardinality of Sets with Infinitely Many Members 6:08 Prove Cardinality of Rational Number is Aleph 0 8:39 Explor...
So You Are GOOD at Logic?
Просмотров 1,8 тыс.9 месяцев назад
Reference: Modeling and solving self-referential puzzles: hrcak.srce.hr/78211?lang=en Self-Referential Aptitude Test by Jim Propp: maa.org/press/periodicals/math-horizons/self-referential-aptitude-test-by-jim-propp Breaking logic with self-referential sentences: mathenchant.wordpress.com/2016/11/17/breaking-logic-with-self-referential-sentences/ Desmos plot used in the video: www.desmos.com/3d/...
Dirichlet Function: The King of Calculus Counter-Examples
Просмотров 30 тыс.9 месяцев назад
Reference: demonstrations.wolfram.com/TheModifiedDirichletFunction/ mathworld.wolfram.com/DirichletFunction.html math.fel.cvut.cz/mt/txtb/4/txe3ba4s.htm 0:00 Five Anti-intuition Calculus Questions 0:20 Derive the Dirichlet Function 1:35 Dirichlet Function Formal Introduction 2:07 Can A Function Be Defined Everywhere but Discontinuous Everywhere 3:37 Can The Sum of Two Discontinuous Function Be ...
Why are Towered Exponents Right Associative?
Просмотров 1,3 тыс.9 месяцев назад
The tetration playlist: ruclips.net/p/PLom0o1f7DWJoz4oJ1MLvqR9mqdMsX25Di 0:00 Google Sheet and Excel gave different answers 1:01 When should we introduce new math notations? 2:42 Left-associative tetration doesn't introduce new math 3:26 Hyperoperation and its recursive nature 5:41 A fun calculation of pentation
0^0: A Century-Long Debate over the Symbol and Its Definition
Просмотров 33 тыс.10 месяцев назад
References: Euler's book (translation): www.17centurymaths.com/contents/euler/introductiontoanalysisvolone/ch6vol1.pdf Undefined vs Indeterminate in Mathematics: www.cut-the-knot.org/blue/GhostCity.shtml Donald Knuth 1992 article: arxiv.org/pdf/math/9205211.pdf History of Mathematics: Conventions: www.parabola.unsw.edu.au/files/articles/2000-2009/volume-45-2009/issue-2/vol45_no2_1.pdf Cours d'A...
Unveil A Sophomore's Dream
Просмотров 1,9 тыс.10 месяцев назад
Let's solve a limit question, a derivative question and an integral question related to x^x. One of them has a beautiful name: Sophomore's dream. 0:00 Intro 0:12 Limit of x!/x^x 0:56 Derivative of x^x 1:30 Integral: Sophomore's Dream (Bernoulli Integral)
Pi's Irrationality from Basic Calculus
Просмотров 12 тыс.10 месяцев назад
Original proof by Ivan Niven: A Simple Proof that π is Irrational, Ivan Niven, Bulletin of the American Mathematical Society, 53 (1947), p. 509. 0:00 Introduction 0:29 Construct f(x) 3:28 Construct F(x) 6:12 Reflection of the Proof
Prove Cauchy Schwarz Inequality with Physics
Просмотров 1,5 тыс.10 месяцев назад
Prove Cauchy Schwarz Inequality with Physics
A Putnam Question Turned Pi Approximation
Просмотров 95510 месяцев назад
A Putnam Question Turned Pi Approximation
A Physics Pythagorean Theorem Proof
Просмотров 3,3 тыс.10 месяцев назад
A Physics Pythagorean Theorem Proof
A Limit That Creates Unity From The Void
Просмотров 6 тыс.10 месяцев назад
A Limit That Creates Unity From The Void
Understanding N-1 in the Sample Variance Formula
Просмотров 1,8 тыс.10 месяцев назад
Understanding N-1 in the Sample Variance Formula
Shape of an Imaginary Circle
Просмотров 94 тыс.10 месяцев назад
Shape of an Imaginary Circle
The Multiple Choice Paradox
Просмотров 65 тыс.10 месяцев назад
The Multiple Choice Paradox
Prove e is Irrational with High School Math
Просмотров 9 тыс.10 месяцев назад
Prove e is Irrational with High School Math
S-Tier Acrobatics Calculus That Physicists Do
Просмотров 243 тыс.10 месяцев назад
S-Tier Acrobatics Calculus That Physicists Do
The Mysterious Spiral of The Infinity Tetration
Просмотров 33 тыс.10 месяцев назад
The Mysterious Spiral of The Infinity Tetration
The Marvelous Leap From Factorial To The Gamma Function
Просмотров 23 тыс.11 месяцев назад
The Marvelous Leap From Factorial To The Gamma Function

Комментарии

  • @hadisardari1564
    @hadisardari1564 4 дня назад

    The best tutorial content I have ever seen❤

  • @markxavior
    @markxavior 13 дней назад

    Wonderful Video. Excellente badge is given. . #Excellente

  • @deynohmuturi1069
    @deynohmuturi1069 17 дней назад

    where does 9:50 formula come from?

  • @kondaadnok221
    @kondaadnok221 19 дней назад

    @4:03 time, 5 th row and 4 column , i think 0 should be there instead of 1

  • @AinurUlFijar.
    @AinurUlFijar. 28 дней назад

    I need bleach for my eyes.

  • @MargoTheNerd
    @MargoTheNerd Месяц назад

    I feel personally attacked 😂

  • @ivanmarkov3879
    @ivanmarkov3879 Месяц назад

    Animations were strong, but you were going waaaay too fast through some parts and quite slow through others. Overall quite a mid video I would say.

  • @tinn_1092
    @tinn_1092 Месяц назад

    I wonder why do they chose f(x) like this?

  • @jonathontordilla
    @jonathontordilla Месяц назад

    trivial

  • @azaleacolburn
    @azaleacolburn Месяц назад

    No way that's rigorous

  • @gvi341984
    @gvi341984 Месяц назад

    Isnt this just ordinary partial differential equations where everything is open

  • @mathew2214
    @mathew2214 Месяц назад

    Did. Did he just prove taylor?

  • @iniyanpadmanaban2288
    @iniyanpadmanaban2288 Месяц назад

    Same as 16/64 cancelling out the six gives 1/4

  • @pavlovsdawg
    @pavlovsdawg Месяц назад

    fun fact-- feynman never wrote a book! they were written by a ghost writer who was also a physicist that compiled random shit he said in lectures.

  • @kingsal
    @kingsal Месяц назад

    I did not watched the video, yet.. But n(!)equalsN AND=arrow.right..

    • @kingsal
      @kingsal Месяц назад

      'Gamma(X)-(X-1) (without explanation mark) is not comparative with general equation form from the picture.

  • @kingsal
    @kingsal Месяц назад

    I have not watched the video, yet.. But power of..Xequals0..

  • @cryme5
    @cryme5 Месяц назад

    To be fair, one can make this argument _almost_ completely formal (the integral operator applied to 0 is just plain bonkers). Call X the space of smooth real functions f on the interval [-1/2,1/2], with the infinity norm over. One can verify that this is a Banach space, and thus so is E the set of bounded linear operators from X to itself. One can define the J in E with norm 1/2 as the integral: (Jf)(x) = int_0^x f(t)dt. With these definitions, and calling 1 the constant function equal to 1, J exp = exp - 1. As a result, (I-J)exp = 1 (this equality is functional). Since the norm of J is strictly less than 1, the series sum_{k=0} J^k is absolutely convergent, call K its sum. Moreover, K(I-J) = I, as truncating the series shows. Then it must be that exp = K1 by composing the equality (I-J)exp = 1 by K. But then K1 = 1+x+x^2/2!+...

  • @mateus_sem_h2468
    @mateus_sem_h2468 Месяц назад

    Dude low key squared an integral sign

  • @mumujibirb
    @mumujibirb 2 месяца назад

    Sadly the right associativity makes it annoying to extend tetration to the reals (a^^b)^^(a^^c) != a^^(b^c)

  • @TheLethalDomain
    @TheLethalDomain 2 месяца назад

    This gives new meaning to "operator calculus."

  • @markgross9582
    @markgross9582 2 месяца назад

    Cool little intro to operator theory video

  • @queroh870
    @queroh870 2 месяца назад

    yes officer, this video right here.

  • @Riksia
    @Riksia 2 месяца назад

    Stop right here, criminal! It's math police, and you are going to the math jail. You are going to use square lined books until the end of your days.

  • @cloudslady3400
    @cloudslady3400 2 месяца назад

    Him saying “ As someone who’s really good at calculus “ is my exit out of the video…but really folks what is defined as “good” when it comes to calculus?….is B+ as a grade in Calculus one considered “good” ?….am i overreacting by running the hell out of every calculus discussion?…. Looking up at physicists I guess I’m a failure looking down at people who have never passed it I think I’m good….that’s basically what a chemist is someone with moderate understanding of physics and mathematics…. NOT the highest just enough to create the best lab products ever…. Or really maybe that is just my justification of my issues…

  • @isaacnewtonstolemyjoy
    @isaacnewtonstolemyjoy 2 месяца назад

    This is like a blasphemous taylor expansion, I cant even be mad about it.

  • @matheusjahnke8643
    @matheusjahnke8643 2 месяца назад

    0:30 remember to use \left( and ight) so the brackets grow to contain that integral.

  • @MithicSpirit
    @MithicSpirit 2 месяца назад

    0:05 you can tell that this is a physicist because they didn't mention that it's up to a constant multiple.

  • @CosmicNous
    @CosmicNous 2 месяца назад

    What did I just watch?

  • @Silly-s8n
    @Silly-s8n 2 месяца назад

    Oh, wow. You can just go up to a math student and tell them this. It's like bullying, but legal.

  • @lemontree-n7i
    @lemontree-n7i 2 месяца назад

    Oh my god what have I just seen

  • @pelegsap
    @pelegsap 2 месяца назад

    tbh I saw worse stuff in physics classes over the years

  • @Physics_HB
    @Physics_HB 2 месяца назад

    Easy one 🌚

  • @SobTim-eu3xu
    @SobTim-eu3xu 2 месяца назад

    Like yea, but damn....