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ƧƿѦςɛ♏ѦਹѤʞ<p>A Problem with Rectangles:<br><a href="https://www.youtube.com/watch?v=VZ25tZ9z6uI" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=VZ25tZ9z6uI</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/geometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geometry</span></a></p>
Christian Lawson-Perfect<p>It's me! On <a href="https://mathstodon.xyz/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a>! Talking about my favourite polyhedron! </p><p><a href="https://youtu.be/3X2aQIMx5bs?feature=shared" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">youtu.be/3X2aQIMx5bs?feature=s</span><span class="invisible">hared</span></a></p><p>After many years never being able to line up doing numberphile video, I was really glad that Brady and I ended up in the same place to do this. I love the animations and especially the sound effects!</p>
Alexandre B A Villares 🐍<p>Cones are MESSED UP <a href="https://ciberlandia.pt/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> </p><p><a href="https://yewtu.be/watch?v=Mkn3PzdaByY" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">yewtu.be/watch?v=Mkn3PzdaByY</span><span class="invisible"></span></a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p>Who wants to win $10,000 ?<br><a href="https://www.youtube.com/watch?v=stpiBy6gWOA" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=stpiBy6gWOA</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://mastodon.social/tags/MagicSquares" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MagicSquares</span></a> <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p>From breeding rabbits to leaping frogs via something that looks suspiciously like the Binet formula:<br><a href="https://www.youtube.com/watch?v=JBkmR3rzz5M" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=JBkmR3rzz5M</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://mastodon.social/tags/Fibonacci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Fibonacci</span></a> <a href="https://mastodon.social/tags/GoldenRatio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GoldenRatio</span></a> <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p>Yet another <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> on stupidly big numbers:<br><a href="https://www.youtube.com/watch?v=Jw_ZPdnHGzg" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=Jw_ZPdnHGzg</span><span class="invisible"></span></a><br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://mastodon.social/tags/numbers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numbers</span></a> <a href="https://mastodon.social/tags/Steinhaus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Steinhaus</span></a> <a href="https://mastodon.social/tags/Moser" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Moser</span></a> <a href="https://mastodon.social/tags/GrahamsNumber" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GrahamsNumber</span></a> <a href="https://mastodon.social/tags/Knuth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Knuth</span></a><br>Part 2: <a href="https://www.youtube.com/watch?v=ADwK4BgwzP8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=ADwK4BgwzP8</span><span class="invisible"></span></a></p>
coucou<p><a href="https://toot.community/tags/dimensions" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dimensions</span></a> <a href="https://toot.community/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a><br><a href="https://www.youtube.com/watch?v=FnRhnZbDprE" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=FnRhnZbDpr</span><span class="invisible">E</span></a></p>
Elliot Shank<p>“A 1.58-Dimensional Object”</p><p><a href="https://www.youtube.com/watch?v=FnRhnZbDprE" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=FnRhnZbDprE</span><span class="invisible"></span></a></p><p>Even better when it gets to the “integer dimensioned" fractals.</p><p><a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> <a href="https://mastodon.social/tags/fractals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fractals</span></a></p>
Michael Höhle<p>‪I'm enjoying the free time from classes to finally write a blog post again:</p><p>Risky Risk Results - <a href="https://mhoehle.github.io/blog/2025/02/21/risk.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">mhoehle.github.io/blog/2025/02</span><span class="invisible">/21/risk.html</span></a></p><p>The work was inspired by a <a href="https://fosstodon.org/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> episode on erroneous calculations of the probabilities in the Game of Risk. </p><p><a href="https://fosstodon.org/tags/rstats" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rstats</span></a> <a href="https://fosstodon.org/tags/probability" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>probability</span></a></p>
Bharath M. Palavalli<p>I’ve always enjoyed reading Donald Knuth but listening to him in <a href="https://www.numberphile.com/podcast/donald-knuth" rel="nofollow noopener" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">numberphile.com/podcast/donald</span><span class="invisible">-knuth</span></a> somehow doesn’t sit well. <a href="https://mastodon.sdf.org/tags/knuth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>knuth</span></a> <a href="https://mastodon.sdf.org/tags/tex" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tex</span></a> <a href="https://mastodon.sdf.org/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a></p>
Stuart Langridge<p>Hey, <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> types. New <a href="https://mastodon.social/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a> video about "the lazy caterer's sequence", maximising the number of pieces you can cut a pizza into with straight-line cuts by ensuring that each cut intersects all previous cuts, so that after n cuts you've got 1+Σn pieces. But doing it the obvious way tends to give lots of tiny little triangular bits. Has anyone looked into how to keep the slices as close to equal as possible? I can't find anything. Is it not even remotely possible?<br><a href="https://www.youtube.com/watch?v=Xd9UZSodeN8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=Xd9UZSodeN</span><span class="invisible">8</span></a></p>
Elliot Shank<p>Shakespeare’s use of the word “cypher" and the origin of the multiplication symbol (×): <a href="https://www.youtube.com/watch?v=21Ho32fAEEM" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=21Ho32fAEE</span><span class="invisible">M</span></a></p><p><a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> <a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/video" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>video</span></a> <a href="https://mastodon.social/tags/Shakespeare" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Shakespeare</span></a></p>
Linh Pham<p>The Parker Square brown paper was found, framed and was given to Matt Parker 💙</p><p>Numberphile: The Parker Paper (a lost treasure)</p><p><a href="https://www.youtube.com/watch?v=T0U9ou0HOgY" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=T0U9ou0HOg</span><span class="invisible">Y</span></a></p><p><a href="https://linh.social/tags/ParkerSquare" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ParkerSquare</span></a> <a href="https://linh.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a></p>
Peter Guhl<p><a href="https://chaos.social/tags/Cones" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cones</span></a> are MESSED UP - <a href="https://chaos.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> - <a href="https://chaos.social/tags/YouTube" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>YouTube</span></a> <a href="https://chaos.social/tags/Science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Science</span></a> <a href="https://chaos.social/tags/SciComm" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SciComm</span></a> </p><p><a href="https://www.youtube.com/watch?v=Mkn3PzdaByY" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=Mkn3PzdaBy</span><span class="invisible">Y</span></a></p>
bewitchedmind<p>Mind. Blown. 🤯 </p><p><a href="https://www.youtube.com/watch?v=Mkn3PzdaByY" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=Mkn3PzdaBy</span><span class="invisible">Y</span></a></p><p><a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/geometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geometry</span></a> <a href="https://mastodon.social/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a></p>
ednl 🇪🇺<p>It took a little under 3 hours for my program on a <a href="https://mastodon.social/tags/RaspberryPi" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RaspberryPi</span></a> 5 with 4 cores at 2.4 GHz to calculate that there are 863 <a href="https://mastodon.social/tags/tetrahedral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tetrahedral</span></a> sums of up to 4 terms for the number 2^32-1, and another 377968 sums of 5 terms.</p><p><a href="https://mastodon.social/tags/programming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>programming</span></a> <a href="https://mastodon.social/tags/C" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>C</span></a> <a href="https://mastodon.social/tags/Clanguage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Clanguage</span></a> <a href="https://mastodon.social/tags/C_lang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>C_lang</span></a> <a href="https://mastodon.social/tags/mathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mathematics</span></a> <a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a> <a href="https://mastodon.social/tags/math" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>math</span></a> <a href="https://mastodon.social/tags/numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>numberphile</span></a> <a href="https://mastodon.social/tags/JournalOfRecreationalMathematics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JournalOfRecreationalMathematics</span></a> <a href="https://mastodon.social/tags/compsci" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>compsci</span></a> <a href="https://mastodon.social/tags/PollocksConjecture" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PollocksConjecture</span></a></p>
ednl 🇪🇺<p>A couple of days ago I made a "combinations" function in <a href="https://mastodon.social/tags/C" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>C</span></a> that works the same as <a href="https://mastodon.social/tags/Python" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Python</span></a> itertools.combinations. I used it to help with a <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> challenge, however I misunderstood: duplicates WERE allowed. So I binned it all, went back to nested loops and added multi-threading. Now it only takes about 0.01 s to calculate all <a href="https://mastodon.social/tags/tetrahedral" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tetrahedral</span></a> sums (up to 5 terms) of 343867 which is supposed to be the last one that requires more than 4 terms.</p><p>Works on <a href="https://mastodon.social/tags/Mac" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mac</span></a> and <a href="https://mastodon.social/tags/Linux" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Linux</span></a>: <a href="https://github.com/ednl/tetrahedral/blob/main/tetrasum.c" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/ednl/tetrahedral/bl</span><span class="invisible">ob/main/tetrasum.c</span></a></p>
Marcel Waldvogel<p>TIL: Origami is more powerful than Euclidian Geometry!</p><p>No need to be afraid when Zsuzsanna Dancso explains that Origami can create the shared tangent to two parabolas, something related to construct cubic roots (which Euclid couldn't, only square roots). (And that it can solve cubic equations, wow!)</p><p>But actually, she is just folding paper, only getting to the scary stuff at the very end. Fascinating!</p><p><a href="https://waldvogel.family/tags/Origami" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Origami</span></a> <a href="https://waldvogel.family/tags/Euclid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Euclid</span></a> <a href="https://waldvogel.family/tags/EuclideanGeometry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EuclideanGeometry</span></a> <a href="https://waldvogel.family/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> <a href="https://waldvogel.family/tags/ZsuzsannaDancso" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ZsuzsannaDancso</span></a> <br><a href="https://www.youtube.com/watch?v=SL2lYcggGpc&amp;list=PLt5AfwLFPxWLGm-EZUKAdx7wad6mjCQsh&amp;index=1" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=SL2lYcggGp</span><span class="invisible">c&amp;list=PLt5AfwLFPxWLGm-EZUKAdx7wad6mjCQsh&amp;index=1</span></a></p>
bewitchedmind<p>Schönes Video von <a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a>.</p><p><a href="https://www.youtube.com/watch?v=0LkBwCSMsX4" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">youtube.com/watch?v=0LkBwCSMsX</span><span class="invisible">4</span></a></p><p>Slightly related habe ich nun einen Knoten im Hirn:</p><p>- Pi hat unendlich viele Nachkommastellen, in denen alle überhaupt möglichen Zahlenfolgen vorkommen.</p><p>- Also müssen auch *unendlich lange* Folgen sich wiederholender Zahlen, ob 666... oder 123123123..., darin vorkommen.</p><p>- Aber dann könnten dahinter nicht mehr alle noch fehlenden möglichen Zahlenfolgen kommen.</p><p><a href="https://mastodon.social/tags/Mathe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mathe</span></a>-Bubble, helft mir mal, wo ist mein Denkfehler? 🤔 </p><p><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a></p>
ƧƿѦςɛ♏ѦਹѤʞ<p><span class="h-card" translate="no"><a href="https://fosstodon.org/@happyborg" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>happyborg</span></a></span> <br>Oh no, here we go again. <br><a href="https://mastodon.social/tags/Numberphile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Numberphile</span></a> <br><a href="https://mastodon.social/tags/Mathologer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Mathologer</span></a> <br><a href="https://mastodon.social/tags/MinusOneOverTwelve" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MinusOneOverTwelve</span></a> <br><a href="https://mastodon.social/tags/MinusOneTwelfth" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MinusOneTwelfth</span></a> <br>:-) <br><a href="https://mastodon.social/tags/maths" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>maths</span></a></p>