#math

Oh, wow this will be my 1000th posts (give or take) here on #pixelfed , mostly of things I enjoy or find amusing: #swimming , #beach & #travel, #tech, #math, #science, #drawings, #art & #bara , #gear & #fashion, being #gay AF, and eating good #food If you do too, follow me for more 😁❤️ (re) #introduction

How to prove equations using diagrams, part 3 https://lobste.rs/s/dr5zrz #compilers #math #plt https://www.epatters.org/post/e-graphs-3/

How to prove equations using diagrams, part 1 https://lobste.rs/s/jvicvb #compilers #math #plt https://www.epatters.org/post/e-graphs-1/

Fraction comparison trick revisited https://lobste.rs/s/fcfoqq #math https://www.johndcook.com/blog/2026/11/03/fraction-comparison-trick-revisited/

This background sound leaks your exact location via @fanf@mendeddrum.org https://lobste.rs/s/s1btqo #video #math #security https://youtu.be/UytYrhYLOKI

A400000 Winners https://lobste.rs/s/reerrq #math https://oeis.org/wiki/A400K_Winners

XKCD and Fourier https://lobste.rs/s/mni8ri #math https://leancrew.com/all-this/2026/10/xkcd-and-fourier/

1/6 This week for #MathsMonday I'm going do - again - a #mathematics order of operations proof, but the simple version. 🙂 Last time there were people who were claiming that + and - "can be a binary operator", and I was actually addressing that, but in the process proved that #Maths binary operators have to be solved before #Math unary operators, thus proving the order of operations rules, but this time an arithmetic approach, based on the operator definitions...

1/5 #MathsMonday #Maths #Math This week a commonly-forgotten rule of #Mathematics - because we usually skip these lines of working out and go straight to the solution - when we substitute a value for a pronumeral, the value goes in brackets. i.e. if a=3, then 2a=2(3), not 23, because 2a=6, not 23. We can see this explicitly demonstrated on page 36 of Modern Algebra https://archive.org/details/modernalgebrastr01dolc_2 If showing full working out (which Modern Algebra skips) then the next step is to apply...

1/5 #MathsMonday I'm coming back to a point I've covered before, but this time adding #Mathematics textbooks for the sake of completeness, that being the history of what Division meant in #Maths, with emphasis on what it means now in #Math Up until at least the 17th Century everything that followed a division symbol was in the Divisor. We can see that in Teutsche Algebra (1659), on page 76, where 7÷GG+1 means 7÷(GG+1)....

Start Doing Graph Theory https://lobste.rs/s/46sc07 #book #math https://vertex.degree/

I've never been a fan of these calculators https://lobste.rs/s/ho1oj5 #video #ai-tooling #education #math #rant https://www.youtube.com/watch?v=r_Byrs11ccM

The Exponential Time Hypothesis Is False [pdf] https://lobste.rs/s/pq6ju6 #pdf #math https://github.com/openai/math/blob/main/preprints/The-Exponential-Time-Hypothesis-is-False-October-25-2026/paper.pdf

Heavenly delights of hashing numbers under EQUALP https://lobste.rs/s/0ta2mv #lisp #math #performance #programming https://turtleware.eu/posts/Heavenly-delights-of-hashing-numbers-under-EQUALP.html

Want to work with me? There is a postdoc position available (2 year contract, mild teaching load, starting date October 2027) Apply now! https://www.mathjobs.org/jobs/list/29333 #math #postdoc #maths

Aggro is the Foundation (2022) https://lobste.rs/s/lh8nvx #math #practices https://radimentary.wordpress.com/2022/11/07/aggro-is-the-foundation/

A5 v1.0 https://lobste.rs/s/wtthju #compsci #math #rust #visualization https://a5geo.org/blog/2026/10/14/a5-v1

Programming Language Fundamentals in Agda https://lobste.rs/s/dtwbpu #math #plt https://plfa.github.io/

Making Hybrid Images (2014) https://lobste.rs/s/16tsvr #graphics #math https://www.jeremykun.com/2014/09/29/hybrid-images/

There's never been a better time to go into math https://lobste.rs/s/wzgadv #video #math https://www.youtube.com/watch?v=LKrwhjOI8Nc