14 comments

  • ChrisbyMe11 hours ago
    This entire youtube channel is a gem btw.<p>Delightful video on the lambda calculus and other compution concepts <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=RcVA8Nj6HEo" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=RcVA8Nj6HEo</a>
    • Sharlin11 minutes ago
      I loved this one about periodic double pendulums and their state space <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=dtjb2OhEQcU" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=dtjb2OhEQcU</a>
    • mkw505311 hours ago
      Thanks for sharing. I remember reading Introduction to Lambda Calculus many years ago and it was one of those times where I had crazy math dreams and would wonder around SF convinced everything is functions. Like literally everything.
      • mkw50533 hours ago
        s&#x2F;wonder&#x2F;wander (although wonder kind of accidentally works too)
      • sublinear10 hours ago
        I miss having the crazy math dreams I used to get when I was in college. If only life could be an endless stream of turning over new stones.
        • fasterik6 hours ago
          I wonder if it&#x27;s an age&#x2F;brain development thing. I also had crazy math and programming dreams in my early 20s. I don&#x27;t get those any more, though I still spend a lot of waking time (possibly more now than back then) obsessing over math and programming problems.
        • whoanoway2 hours ago
          [dead]
    • empath7550 minutes ago
      This channel manages to be both informative and psychedelic at the same time, I love it. Their video on the quintic is amazing, too.<p><a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=9HIy5dJE-zQ" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=9HIy5dJE-zQ</a>
  • Fluorescence1 hour ago
    I enjoyed this and it warmed my heart a bit to see 4m views for some math animations. Maybe popular on r&#x2F;trees or something :)<p>I was curious what they used to generate the graphic&#x27;s and it&#x27;s their own tool:<p><a href="https:&#x2F;&#x2F;github.com&#x2F;2swap&#x2F;swaptube" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;2swap&#x2F;swaptube</a>
  • iamjackg1 hour ago
    It reminds me of the billiards segment in Donald in Mathmagic Land[0]. I absolutely adored it as a kid.<p>0: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Donald_in_Mathmagic_Land" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Donald_in_Mathmagic_Land</a>
  • nomilk9 hours ago
    The emergent patterns are... stunning. Especially the ones around 2m35s <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=kL9BTbIGxLg&amp;t=2m35s" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=kL9BTbIGxLg&amp;t=2m35s</a>
    • knodi1233 hours ago
      I saw a video series long ago where a guy kept playing with shapes algorithmically like this, and his catch phrase was something like &quot;oops, I made a fractal again&quot;. Wish I could find it!
  • buildbot10 hours ago
    Wow this is stunningly beautiful and extremely cool. And I learned something I had never heard about.<p>BRB going to go make hyperbolic outer billards art
  • enatiello2 hours ago
    Stay down. After your shot, don&#x27;t stand up right away.
  • laxatives4 hours ago
    I gotta know if the music is relating to the math or image in a generative way or if its just vibes&#x2F;style.
    • TACD2 hours ago
      The music is by 6884; the track for this video (I assume commissioned specifically for it) is available here: <a href="https:&#x2F;&#x2F;6884.bandcamp.com&#x2F;album&#x2F;outer-billiards" rel="nofollow">https:&#x2F;&#x2F;6884.bandcamp.com&#x2F;album&#x2F;outer-billiards</a>
  • thinkingtoilet3 hours ago
    Very rare to see such visual beauty in math like this. Well done.
  • dlcarrier7 hours ago
    I will never cease to be amazed by the range of thought experiments that get published as math papers.
    • RogerL3 hours ago
      The video didn&#x27;t make this clear, but it is answering real questions. Its used in the study of geometrical optics, celestial navigation, etc. Ie set up a &#x27;toy&#x27; problem that gives you insights into rather more complicated dynamical systems.<p>From Tabachnikov&#x27;s book Geometry and Billiards:<p>Classical mechanics and geometrical optics, discussed in this chapter, are intimately related. The configuration trajectories of mechanical systems are extremals of a variational principle, similar to the trajectories of light. In fact, mechanics can be described as akind of geometrical optics; this was Hamilton’s approach to mechanics(see [3] for details). The brachistochrone problem is a good example of this optics-mechanics analogy.
  • temp082610 hours ago
    Shooting pool with dmt entities right here
  • sirnicolaz3 hours ago
    LSD is worse
  • globular-toast5 hours ago
    Youtube quality really let&#x27;s stuff like this down.
    • ngcazz4 hours ago
      oddly I felt like the compression artefacting during the hyperbolic part enhanced the psychedelic effect
  • Keyframe5 hours ago
    Great, but audio and audio mix is absolutely horrendous and super turbo 2.0 annoying. So much so I had to turn it off and read CC.
    • jaapz5 hours ago
      I liked it, felt right for the video
      • Keyframe5 hours ago
        I think it might be the mix and the (low) level of voice over background and the stereo image combined with what I am listening on that makes me uncomfortable for some reason.
  • brador7 hours ago
    This is math junk food. Pretty though.
    • RogerL3 hours ago
      The video contains no equations, but it cites original, ongoing, research that has been going on since the 50s. Sure, you could rip a bong and go &quot;woah, cool colors&quot;, or you could follow the links and read, say, Tabachnikov&#x27;s book.<p>Personally I found that the videos instantly made some group theory aspects of this stand out. Maybe I&#x27;m completely off, and that&#x27;s not really how this is approached, but now I have a question&#x2F;idea as a foil which I can use to look a bit deeper. In any case, the animation SW came from a researcher in the field, I don&#x27;t think they are doing this to generate junk food, but to solve actual problems in their field.
    • fasterik6 hours ago
      I would call it art, not junk food.
    • nkrisc5 hours ago
      How so? I think applied mathematics is the exception.
    • bayindirh5 hours ago
      It made me reconsider what I think about mathematics in general. So, if it was junk food, it was a nutritious one at that.
    • zkmon3 hours ago
      Entire math is junk food. Real animals don&#x27;t touch that.
      • nkrisc2 hours ago
        That’s not entirely true. There are parts of mathematics that have useful real world applications. Sometimes even the parts we thought were esoteric and abstract turn out to have applications that were not conceived of yet at the time of discovery.