The golden ratio as a number base https://lobste.rs/s/1e9wix #math
https://apieceofthepi.substack.com/p/the-golden-ratio-as-a-number-base

Identity Types via @fanf https://lobste.rs/s/rylcz7 #math
https://bartoszmilewski.com/2025/09/22/identity-types/

The Naming of Tack Symbols via @rk https://lobste.rs/s/7ohiib #apl #math
https://www.math.uwaterloo.ca/~ljdickey/apl-rep/tables/note1.html

There is a formula that gives the volume of a Chicago style deep dish pie with thickness a and radius z: pi zz a

#math #12

The Napkin project https://lobste.rs/s/a8ey4q #book #math
https://web.evanchen.cc/napkin.html

Bluffing in Scrabble via @fanf https://lobste.rs/s/ua5vtc #games #math
https://arxiv.org/abs/2509.10471

Claude Can (Sometimes) Prove It https://lobste.rs/s/limhxl #math #vibecoding
https://www.galois.com/articles/claude-can-sometimes-prove-it

Rupert's Snub Cube and other Math Holes via @PolyWolf https://lobste.rs/s/uwa9dw #video #math #visualization
http://tom7.org/ruperts/

Fuzzy Graph https://lobste.rs/s/emhisc #math
https://fuzzygraph.com/

Rendezvous Hashing Explained (2020) https://lobste.rs/s/bggqkn #compsci #distributed #math
https://randorithms.com/2020/12/26/rendezvous-hashing.html

The pirate-based logic of Rust shared references https://lobste.rs/s/ccy3b6 #math #plt #rust
http://ais523.me.uk/blog/logic-of-shared-references.html

Beyond Orthogonality: How Language Models Pack Billions of Concepts into 12,000 Dimensions https://lobste.rs/s/zvngj0 #ai #math
https://nickyoder.com/johnson-lindenstrauss/

also, are there people who are thinking about why #math? Like, we have whole systems of thinking around life evolution...do we have an analogue for math? Why did the universe organize that way? It's such an encompassing lens that I struggle to name an alternative. Color, sound etc are all just math filtered through a brain that evolved to interpret that math.

It's weird.

Is there a #math term for the two types of infinities: the infinite infinity set and the limited one? Integers versus dice. Like the die is unlimited in 1-6 results, but aren't infinite--that's the word, maybe? Unlimited vs infinite?

Universe versus Earth. (I suspect the universe isn't infinite, but there's no way to prove it.) Ah, that makes me understand the excitement around prime numbers.

The Einstein field equations rendered in #Libreoffice #Math #L5

R Rsub{%mu%nu}-1 over 2 g rsub{%mu%nu}R+%LAMBDA g rsub{%mu %nu}~=~{8%pi`G} over c^4 T rsub{%mu%nu}

#math #H2

If you have to snap a chalk line and call the decimal expansion of #pi good enough at some point, here's a nifty place to do it: #14 #Math

#Math #L8

If you divide 1 by 998,001 you get all three digit numbers from 000 to 999 in order, with the exception of 998. #math #L2

#Python makes your homework a snap: #Math #37

#!/usr/bin/python3
import sys
from sys import argv
import numpy as np
a=np.array(eval(sys.argv[1]))
print("Matrix:\n")
print(np.matrix(a))
b=a.T
print("\nTranspose:\n")
print(np.matrix(b))
print("\nTrace: ",a.trace())
print("\nDeterminant: ",np.round(np.linalg.det(a),6))
print("\nPseudo-inverse:\n")
c=np.linalg.pinv(a)
print(np.matrix(c))
d,e=np.linalg.eig(a)
print("\nEigenvalues: ",np.round(d,6))

Plots under #Ubuntu #Linux #Math #73

#Math #44

#math #shitpost

Alt...

A map of the world, with every landlocked country colored purple and every country with a coastline colored yellow. The map legend says “maps of countries by meters of coastline” while the key says “purple: zero meters, yellow: infinity meters”