uila
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uila
@muilavalium.bsky.social
88 followers 220 following 9 posts
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zenorogue.bsky.social
An aperiodic tessellation of the hyperbolic plane, found by Toimine in the #tessellations channel in the HyperRogue discord.

These tiles have edge length of 0.56358, less than the previous record for a equilateral convex tile (0.56626, achieved by the regular {7,3} tiling).
December 13, 2025 at 4:59 PM
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freya.bsky.social
you: relax bro

the quadrangulated octagon:
December 9, 2025 at 9:56 PM
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alisonmartin57.bsky.social
showing strains
Bamboo and fabric.
December 2025
December 6, 2025 at 2:54 PM
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imogenreid.bsky.social
Line Drawing, Grid, Variation, Layered Print on Wove Paper
December 5, 2025 at 10:46 AM
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mkosmul.bsky.social
Star a la Fujimoto III (back), folded from Julia Schönhuber’s patterned paper. The symmetry of the pattern matches the model.

#origami #折り紙 #종이접기 #Оригами #origamistar #MichałKosmulski #JuliaSchönhuber
December 5, 2025 at 9:17 PM
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divbyzero.bsky.social
In order to make this origami star, you need a piece of paper in the shape of a regular pentagon. There's a standard method of cutting a pentagon from a square piece of paper. The interesting thing is: it is only an approximation! www.youtube.com/watch?v=ezQV...
December 5, 2025 at 5:04 PM
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ricard-peiro.bsky.social
Diego Rattaggi, 2025-12-03
Bonic!
December 3, 2025 at 11:41 AM
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ilarrosa.bsky.social
La desigualdad de Erdös-Mordell. Propuesta por Paul Erdös en 1935 en el American mathematical Monthly (problema 3740), y resuelta en 1937 por J.L. Mordell y D.F. Barrow. #GeoGebra ilarrosa.github.io/GeoGebra/Des...
November 29, 2025 at 12:48 PM
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alegallardo28.bsky.social
No te lo vas a creer, pero dentro del octógono regular hay un pentágono de El Cairo.
www.geogebra.org/m/vufx7gbh
#mathart #mathsky #geogebra
November 25, 2025 at 11:11 AM
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alegallardo28.bsky.social
Patrón octogonal 2 colores.
#mathart #mathsky #geogebra
www.geogebra.org/m/vdzah5vp
November 24, 2025 at 1:28 PM
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imogenreid.bsky.social
Line Drawing/Grid/Text(ile). Sketch, Layered Print on Fabriano Paper
November 23, 2025 at 11:36 AM
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willhek.bsky.social
Avui sóm 23 de novembre, 23/11, en notació anglosaxona: 11/23. Aquesta data ens recorda als primers termes de la successió de #Fibonacci.

Feliç dia de Fibonacci a tots!
November 23, 2025 at 10:23 AM
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patrickjohanneson.com
8675309 is prime, and so is 8675311, so if you ever need a middlin'-large pair of adjacent primes to test your cryptographic suite, all you need is a 1980s earworm and a +2 and you're all set.
colindickey.com Colin Dickey @colindickey.com · Nov 21
Man, everything is so bleak, anyone got a fun fact or little bit of trivia they want to share
November 21, 2025 at 3:28 AM
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ilarrosa.bsky.social
Un cuadrilátero cíclico ABCD determina 4 △s: △ABC, △ABD, △ACD y △BCD, con ortocentros H_D, H_C, H_B y H_A respectivamente. Estos 8 puntos, vértices y ortocentros, se hallan en una misma hipérbola equilátera.
#GeoGebra
ilarrosa.github.io/GeoGebra/Hip...
ilarrosa.github.io/GeoGebra
November 19, 2025 at 1:14 AM
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catrionaagg.bsky.social
❤️ Love this ❤️

@mathforge.org has done what I’ve never been organised enough to do myself, and catalogued every #geometrypuzzle I’ve ever posted on social media. It looks amazing!
A screenshot of the puzzle gallery (https://notes.mathforge.org/notes/published/puzzle+gallery) showing lots of tiny geometry colourful puzzles
November 17, 2025 at 6:33 AM
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presentcorrect.bsky.social
For anyone that needs it today, a French brick catalogue from 1879

www.presentandcorrect.com/blogs/blog/t...
November 13, 2025 at 6:47 PM
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hitomezashibot.bsky.social
#generativeArt #Hitomezashi
a series of vertical and horizontal dashed lines creating a geometric pattern
November 13, 2025 at 6:58 AM
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ilarrosa.bsky.social
Un ◯ mixtilíneo de un △ es tangente a 2 lados y a la ◯ circunscrita. En ilarrosa.github.io/GeoGebra/Cir... puede verse la demostración de que el incentro esta en la línea que une los puntos de contacto con los lados y el cálculo del radio.

ilarrosa.github.io/GeoGebra
November 12, 2025 at 9:15 PM
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imogenreid.bsky.social
Sketch, Text(ile), Layered Print on Fabriano Paper
November 8, 2025 at 5:57 PM
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robertfathauer.bsky.social
Great "tessellation" on the ceiling of the 20th Dynasty (ca 1100 BC) Tomb of Anherkha in the Valley of the Workers in Luxor
November 9, 2025 at 6:59 PM
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robertfathauer.bsky.social
Another type of Cairo pentagon paver in Cairo.
November 5, 2025 at 7:38 AM
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ilarrosa.bsky.social
Casi toda la Alhambra en posavasos
October 25, 2025 at 2:59 PM
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pwnallthethings.bsky.social
In important math news: new shape just dropped (the noperthedron) www.quantamagazine.org/first-shape-...
First Shape Found That Can’t Pass Through Itself | Quanta Magazine
After more than three centuries, a geometry problem that originated with a royal bet has been solved.
www.quantamagazine.org
October 24, 2025 at 6:08 PM
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ilarrosa.bsky.social
La Esfenocorona es un poliedro convexo con 12 △ equil. y 2 □, 22 aristas y 10 vértices. De estos, en 2 inciden 2 △ y 2 □, en ese orden; en 4 inciden 3 △ y un □; en los 4 restantes 5 △. Es el sólido de Johnson J86.
#GeoGebra
ilarrosa.github.io/GeoGebra/Esf...
ilarrosa.github.io/GeoGebra
October 12, 2025 at 11:05 PM
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jcponcemath.bsky.social
youtube.com/shorts/husHt...
August 17, 2025 at 1:01 AM