#Geometry

Sci-books.comscibooks
2026-02-14

Symmetries of Partial Differential Equations: Conservation Laws ― Applications ― Algorithms 1989th Edition by A.M. Vinogradov (PDF)
Author: A.M. Vinogradov
File Type: PDF
Download at sci-books.com/symmetries-of-pa
, .M.Vinogradov

The Kid Should See This 🌈🪐✨tksst@fediscience.org
2026-02-13

🏰❄️ How do you build a two-story #castle out of #lake #ice without using a single nail or bit of glue?

In #Fairbanks, #Alaska, YouTuber Yogoman in AK braved -44ºC (-47°F) temperatures to test #Indigenous #construction principles, using 800 hand-cut blocks and the #physics of compression to create a massive frozen shelter.

👉 Learn more: thekidshouldseethis.com/post/b

#architecture #auroraborealis #buildings #cold #cooking #design #engineering #fishing #geometry #igloo #nature #science #snow #winter #tksst #video

Yogoman in AK waves from the top of a two-story ice block structure built from frozen lake water in a snowy Alaskan landscape
Martinus Hoevenaarmartinus@mastodon.art
2026-02-13

Decorative muqarnas vaulting in the iwan entrance of the Hazrat Fatima Masumeh Holy Shrine (Qom, Iran).

More info: en.wikipedia.org/wiki/Fatima_M

#architecture #geometry #lsd #spirituality #beauty #art #iran #qom

Photo of a ceiling full of geometric shapes.
2026-02-13

Imperfect faces of a shuriken

A origami shuriken made out of printed grid paper. Each spark has its own colour (red, orange, green, yellow). Major grid squares are Marek with dots L1 to Q1
Laurent Malyslo@framapiaf.org
2026-02-13

Segmented rings

made with #p5js

#creativecoding #mastoart #geometry

Sci-books.comscibooks
2026-02-13

Lie Groups and Lie Algebras III: Structure of Lie Groups and Lie Algebras (Encyclopaedia of Mathematical Sciences, 41) 1994th Edition by A L Onishchik (PDF)
Author: A L Onishchik
File Type: PDF
Download at sci-books.com/lie-groups-and-l
,

2026-02-12

Coping with the AI Apocalypse

Painstakingly, I was putting the finishing touches on my analog geometric art - when this video popped into several of my social media feeds: We Need To Talk About AI… by Cool Worlds Podcast Cool Worlds Podcast is run by a team at Columbia University and usually features guests interviewed by physicist David Kipping. This time, he has no guest but is reporting on a meeting he attended at the Institute of Advanced Study (IAS) in Princeton - professional home to "some of the smartest […]

elkement.art/2026/02/12/coping

Mockup of a canvas print created from the drawing Lissajous Trilogy - 3D Lissajous Figures constructed from their 2D projections, colored in the style of stained glass.
Jan Marthedal Rasmussenjanmr@mathstodon.xyz
2026-02-12

Thales' Theorem: If A, B and C are points on a circle with the segment AC as a diameter then the angle ∠ABC is a right angle janmr.com/posts/thales-theorem #math #geometry #theorem #visualization

Sci-books.comscibooks
2026-02-11

Introduction to Differential and Algebraic Topology: 9 (Texts in the Mathematical Sciences, 9) by Yu.G. Borisovich (PDF)
Author: Yu.G. Borisovich
File Type: PDF
Download at sci-books.com/introduction-to-
, .G.Borisovich

2026-02-11

Islamic geometrical art is justly famous for its mathematical beauty. Here I will point to some documented connections between the artisans who created it and mathematicians.

The mathematician Abū’l-Wafāʾ al-Būzjānī (940–77/8 CE) wrote in a book on geometry useful for craftsmen (more on this later) that he had been present at discussions between artisans and geometers. Al-Khayyāmī (Omar Khayyam; c.1048–c.1131), the father of algebra, wrote of attending such a meeting. Caʿfer Efendi (fl. early 17th century) wrote of discussions between ‘learned men’ and architects on the subject of geometry.

Another connection is in the person Abu’l-Faḍl ibn ʿAbd al-Karīm (d. 1202/3), whom Ibn abi Uṣaybiʿah recorded as having been called ‘the geometrician’ for his famed knowledge of geometry. He was by profession a carpenter and stonemason. He studied Euclid to improve his carpentry; he then proceeded to Ptolemy’s ‘Almagest’ and became an authority in geometry. His skill is evident in the doors he made for the Bīmaristān Nūr al-Dīn in Damascus, which have upon them a geometrical pattern of hexagons and pentagrams made up of brass nails (the design is shown in the attached image).

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#geometry #MathArt #aesthetics #MathematicalBeauty #tiling #IslamicArt

Geometrical pattern on the doors of the Bīmaristān Nūr al-Dīn, designed by Abu’l-Faḍl ibn ʿAbd al-Karīm. It comprises a complex design based on hexagons and pentagrams, symmetrical both vertically, across the middle of the doors, horizontally within each door, and horizontally between the doors.

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