https://bsky.app/profile/robertfathauer.bsky.socialhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mux3ew665k2vSpial aloes in Lesotho, where they are the national flower07 Sep 2026 17:56 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mux3ew665k2vhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mtl3koq5kc2bHow many distinct tiles are there in this Nice street paving, and how many tiles are there in the translational repeat unit?21 Aug 2026 06:02 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mtl3koq5kc2bhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mskeb6uaak2qSome fiber art in the the art exhibition at the Bridges Conference in Galway, Ireland08 Aug 2026 05:40 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mskeb6uaak2qhttps://bsky.app/profile/robertfathauer.bsky.social/post/3msfasedgic2iArt Exhibition at the 2026 Bridges Conference in Galway, Ireland, during set-up (top) and opening reception (bottom).06 Aug 2026 04:54 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3msfasedgic2ihttps://bsky.app/profile/robertfathauer.bsky.social/post/3ms4bblltt22iI added several new self-replicating tiles to my "Fractal Reptiles Based on Polyforms" website. I'll be talking about these at the Bridges Conference in Galway, Ireland this week. https://mathartfun.com/fractaldiversions/FractalReptilesHome.html02 Aug 2026 15:09 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3ms4bblltt22ihttps://bsky.app/profile/robertfathauer.bsky.social/post/3mrsaa55lrc2nFractal self-replicating tile formed by iterating a tri-kite, reflecting between successive iterations29 Jul 2026 15:24 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mrsaa55lrc2nhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mrdi2d4zbk2gI made some house-number tiles.23 Jul 2026 18:34 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mrdi2d4zbk2ghttps://bsky.app/profile/robertfathauer.bsky.social/post/3mqzcwlrkgc2rThe Dice Lab's popular Skew dice gamer's set is now available in purple and Malachite. https://mathartfun.com/DiceLabDice.html19 Jul 2026 17:36 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mqzcwlrkgc2rhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mpvuivmvp22jOver 5,500 mathematical artworks can now be browsed in an attractive new gallery-wall layout on the Bridges website, thanks to the efforts of Nathan Selikoff: https://gallery.bridgesmathart.org/gallery?seed=1579912697&page=105 Jul 2026 15:14 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mpvuivmvp22jhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mpgtlxlycc2jI don’t recall ever seeing a toroidal box before. This one, at the Phoenix Art Museum, is a beauty. Chinese, Qing Dynasty (1650-1700), cloisonné enamel on bronze, for Buddhist prayer beads.29 Jun 2026 15:48 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mpgtlxlycc2jhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mp4o5avusc2vThe website for the 2026 Bridges Conference Exhibition of Mathematical Art, Craft, and Design is now live, featuring the work of more than 150 artists. https://gallery.bridgesmathart.org/exhibitions/bridges-2026-exhibition-of-mathematical-art25 Jun 2026 14:44 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mp4o5avusc2vhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mosqxprr4k25My 2027 Bridges Conference paper, entitled “Iterating Polyiamonds, Polyhexes, and other Polyforms to Create Fractal Reptiles,” is available: https://mathartfun.com/fractaldiversions/Bridges2026Fathauer.pdf21 Jun 2026 16:08 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mosqxprr4k25https://bsky.app/profile/robertfathauer.bsky.social/post/3mnayzcbuqs2fThese pavers are seen throughout the historic center of Puebla, Mexico.01 Jun 2026 21:19 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mnayzcbuqs2fhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mn46vvqhac24In the convent in Metztitlan, Hidalgo, Mexico30 May 2026 23:21 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mn46vvqhac24https://bsky.app/profile/robertfathauer.bsky.social/post/3mmmeekxihc27New hand-built ceramic piece, with bamboo and leather; mathematically, a Hopf link with Seifert surface. https://www.mathartfun.com/robertfathauer.com/BoundTori.html24 May 2026 16:16 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mmmeekxihc27https://bsky.app/profile/robertfathauer.bsky.social/post/3mlels4oyws2rEmily Groshoz, a poet and philosopher who was a member of the Bridges community, passed away on May 2nd. You can read one of her math-inspired poems, "In Praise of Fractals", here: https://mathartfun.com/fractaldiversions/InPriaseOfFractals.html08 May 2026 20:42 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mlels4oyws2rhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mirbi6mxhk2dFractal self-replicating tile formed by iterating a 3-kite05 Apr 2026 17:27 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mirbi6mxhk2dhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mi7dofjkgk2kA fractal self-replicating tile created by iterating a pentabolo29 Mar 2026 14:18 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mi7dofjkgk2khttps://bsky.app/profile/robertfathauer.bsky.social/post/3mhtgpt2rac24Pavers in Negombo, Sri Lanka, photogaraphed by a friend earlier today24 Mar 2026 20:41 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mhtgpt2rac24https://bsky.app/profile/robertfathauer.bsky.social/post/3mhnqojders2oAnother √6-scaled fractal self-replicating tile. This one is based on a rhombic grid in which the grid cells have diagonals measuring 1 and √15/3.22 Mar 2026 14:23 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mhnqojders2ohttps://bsky.app/profile/robertfathauer.bsky.social/post/3mh4ebfbo5s2pUsing square- or triangle-based grids, there are no overlapping transformations of the grid for n = 6. By distorting a grid, for example stretching a square grid by √2, n=6 becomes allowed. Here a hexa-rectangle is used to form a fractal self-replicating tile.15 Mar 2026 16:25 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mh4ebfbo5s2phttps://bsky.app/profile/robertfathauer.bsky.social/post/3mf7sj2dofs2qCharles O Perry sculpture in the lobby of the Hyatt Regency in San Francisco19 Feb 2026 14:28 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mf7sj2dofs2qhttps://bsky.app/profile/robertfathauer.bsky.social/post/3md4i37svrk2lFractal self-replicating tile created by iterating a tetrakite seven times23 Jan 2026 19:53 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3md4i37svrk2lhttps://bsky.app/profile/robertfathauer.bsky.social/post/3mcanycgcf22cWth Sujan Shrestha at the Computer Museum, in Hunt Valley, MD last week. This is one of around 70 Apple-1 computers whose whereabouts are known, out of around 200 total made.12 Jan 2026 18:24 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3mcanycgcf22chttps://bsky.app/profile/robertfathauer.bsky.social/post/3m7qbpw5cy22qThe online gallery for 2026 Joint Mathematics Meetings Exhibition of Mathematical Art is now live: https://gallery.bridgesmathart.org/exhibitions/2026-jmm-art-exhibition.11 Dec 2025 19:12 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m7qbpw5cy22qhttps://bsky.app/profile/robertfathauer.bsky.social/post/3m6sei7a6mk2zSome pavers spotted in Cairo last month29 Nov 2025 21:41 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m6sei7a6mk2zhttps://bsky.app/profile/robertfathauer.bsky.social/post/3m6px5i23d22iA Truchet cafe, in Cairo last month28 Nov 2025 22:37 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m6px5i23d22ihttps://bsky.app/profile/robertfathauer.bsky.social/post/3m62utdxkbc2i5-stars were commonly used on the ceilings of tombs and other buildings in Ancient Egypt to depict the heavens. They are usually not connected to one another, but they are connected in this ceiling in the Ptolemaic Denderah Temple to form a sort of tessellation of hexagons and quadrilaterals.20 Nov 2025 13:30 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m62utdxkbc2ihttps://bsky.app/profile/robertfathauer.bsky.social/post/3m57sb4fnfs25Ancient Egyptian numbers used to track sacrifices on the side of the Temple of Ramesses III (1217 BC - 1155 BC) in Luxor. A vertical tick mark denotes 1 and an inverted U ten.09 Nov 2025 19:02 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m57sb4fnfs25https://bsky.app/profile/robertfathauer.bsky.social/post/3m57s2qymds25Great "tessellation" on the ceiling of the 20th Dynasty (ca 1100 BC) Tomb of Anherkha in the Valley of the Workers in Luxor09 Nov 2025 18:58 +0000at://did:plc:xveqynupeukyqfmitjlislk2/app.bsky.feed.post/3m57s2qymds25