#tetrahedral — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #tetrahedral, aggregated by home.social.
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🎉 Behold! Another jargon-laden #tech article that reads like a #GPU spec sheet on steroids! 🚀 Dive into the thrilling world of "ray tracing" with "tetrahedral cages" – because why be straightforward when you can invent new ways to confuse readers? 🤓✨
https://gpuopen.com/learn/ray-tracing-massive-amounts-animated-geometry/ #jargon #ray #tracing #tetrahedral #cages #specs #HackerNews #ngated -
Look at the character again: 水.Physical chemistry tells us that water's bizarre anomalies—like expanding when it freezes—happen because it forms a #tetrahedral network, where every water molecule bonds with exactly four neighbors.By a beautiful bit of cosmic poetry, the Kanji 水 mirrors that exact same number: a central core surrounded by four distinct branching arms.
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Very proud to have been published on Neil Sloane's Online Encyclopedia of Integer Sequences where I sent in a small correction after watching James Grime's Numberphile video on tetrahedral numbers https://youtu.be/CK3_zarXkw0 and reading the links at https://oeis.org/A104246
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It took a little under 3 hours for my program on a #RaspberryPi 5 with 4 cores at 2.4 GHz to calculate that there are 863 #tetrahedral sums of up to 4 terms for the number 2^32-1, and another 377968 sums of 5 terms.
#programming #C #Clanguage #C_lang #mathematics #maths #math #numberphile #JournalOfRecreationalMathematics #compsci #PollocksConjecture
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A couple of days ago I made a "combinations" function in #C that works the same as #Python itertools.combinations. I used it to help with a #Numberphile 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 #tetrahedral sums (up to 5 terms) of 343867 which is supposed to be the last one that requires more than 4 terms.
Works on #Mac and #Linux: https://github.com/ednl/tetrahedral/blob/main/tetrasum.c
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Asymmetry Detected in the Distribution of #Galaxies
https://www.quantamagazine.org/asymmetry-detected-in-the-distribution-of-galaxies-20221205/
Two new studies suggest that certain #tetrahedral arrangements of galaxies outnumber their mirror images, potentially reflecting details of the #universe’s birth. But confirmation is needed.