Cauchy Schwarz and what to DO with it (corrected) // An Introduction to Real Analysis

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  • เผยแพร่เมื่อ 19 ธ.ค. 2024

ความคิดเห็น • 20

  • @anthonyymm511
    @anthonyymm511 ปีที่แล้ว +6

    5:15 RHS of that first equality should be squared.

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว +3

      Thanks for catching that! I’ll pin this so others can see it too.

  • @AxiomTutor
    @AxiomTutor ปีที่แล้ว +3

    Great presentation -- I distinctly remember, first time I encountered CS, I wondered "How was I supposed to know this? And how am I supposed to know when to reach for it?" I definitely would have benefited from hearing "You weren't supposed to know this or figure it out -- you were supposed to learn it in analysis and use it ever after. From now on, when the triangle inequality fails you, think about reaching for CS."

  • @kd1389
    @kd1389 ปีที่แล้ว +4

    I’m taking real and complex analysis this semester and your videos are so helpful!

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว +1

      I’m really happy to hear that!

  • @vincentzevecke4578
    @vincentzevecke4578 5 หลายเดือนก่อน +1

    Thank you so much about cauchy-schwart inequality. You just help me out understanding hilbert spaces

    • @JoelRosenfeld
      @JoelRosenfeld  5 หลายเดือนก่อน

      I’m glad I could help! Welcome to the channel

  • @Cyclonus-fc1xx
    @Cyclonus-fc1xx ปีที่แล้ว +2

    I love the thumbnail, Rudin next to a waffle and coffee the perfect way to start off a day

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว +1

      The best thing about making those thumbnails is that I get a snack when I'm done!

  • @mmariokart231
    @mmariokart231 ปีที่แล้ว +2

    Analysis is the best subject in math!

  • @tejasvichannagiri2490
    @tejasvichannagiri2490 ปีที่แล้ว +1

    Great video Dr. Rosenfeld! I suggest asking the class to prove the nth root existence in one line once the inverse function theorem is proven. I always though it was fun how abstract theorems are sometimes easier to prove than the corresponding special cases, after building up the necessary machinery.

  • @Lil_shrimp4
    @Lil_shrimp4 ปีที่แล้ว +1

    ur my new goat of mathematics youtube
    cant wait to start uni

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว

      Thanks! That means a lot to me!

    • @Lil_shrimp4
      @Lil_shrimp4 ปีที่แล้ว

      Did an interesting STEP 2 2017 question on the integral form of this inequality (I’m not sure if it’s the same one forgive me if I’m wrong) and got stuck on the last part
      I need to do step for my Cambridge offer and it’s extremely tough so I was wondering if you had tips for approaching it (if you have heard of the exam)

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว

      @@Lil_shrimp4 Can you give me a link to the question? I’d hate to give advice in the wrong direction.

  • @estebanhenriquez3183
    @estebanhenriquez3183 ปีที่แล้ว +2

    I use several times the CS ineq in numerical analysis of pde’s

  • @coreymonsta7505
    @coreymonsta7505 ปีที่แล้ว +1

    I use it a lot in proving properties of SPDE numerical schemes. Usually the Young's inequality applied immediately after to separate the norms

  • @monsterhunter8595
    @monsterhunter8595 ปีที่แล้ว +2

    Very good! I Always looked for a content like this on ytb

    • @JoelRosenfeld
      @JoelRosenfeld  ปีที่แล้ว

      Glad you like it! This has been a fun series to make.