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Dr. Martin Skrodzki @msmathcomp.bsky.social · 17/09/2026

We went there after Bridges for my birthday. A nice picture with me is on the wife's phone, but it's a cool #math pilgrimage place 😁

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 15/09/2026

It took more than 3,000 emails, close to 80 hours of work, and turned further hairs white, but it is great to finally hold the printed proceedings from this year's Bridges #Mathart conference in hand! Kudos to Eve Torrence (managing editor), the other editors, and the authors!

Cover page of the
"Bridges Galway 2026
Mathematics and the Arts
Conference Proceedings"
edited by Martin Skrodzki, Kerry Mitchell, Katherine Seaton, and Eve Torrence

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 08/08/2026

The last talk for today is by Fahreddin Basegmez, who tells us about "Symmetries of Prime Factors." (archive.bridgesmathart.org/2026/bridges...) He presents a fascinating zoo of intricate #MathArt shape assemblies. (3/3)

A slide linking to https://simetri-graphics.github.io/simetri/ with 16 examples below.

A slide labeled "Larger Radii" with two star-shaped examples.

A slide titled "35 is a Very Special Number" with 35 heart shapes arranged in a circular pattern.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 08/08/2026

Next, Loe Feijs tells us about "Visual Representation of Inhibition for Phyllotaxis." (archive.bridgesmathart.org/2026/bridges...) A fascinating journey, starting from Fibonacci Numbers and sunflower shapes, taking us all the way to the "Inhibiscus" shape. (2/3)

A flower-like shape with petals in different tints of red, labelled "Inhibiscus."

A comparison of two "Inhibiscus" shapes, one "golden", one "non-golden."

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 08/08/2026

The second session in the afternoon at the Bridges #MathArt conference starts with Tuan Dung Do, who speaks about "Visual Illusions in the Hyperbolic Plane." (archive.bridgesmathart.org/2026/bridges...) Some illusions might work better with their tool: cs.uwaterloo.ca/~bdo/project... (1/3)

An extension of the Hermann Grid Illusion to the Poincaré disk model of the hyperbolic plane.

An extension of the Scintillating Grid Illusion to the Poincaré disk model of the hyperbolic plane.

An extension of the Rotating Snakes Illusion to the Poincaré disk model of the hyperbolic plane.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

Short paper session in the afternoon at the Bridges #MathArt conference has: Marta Kopyt "Math through books", Gary Lester "Art as Math Representation", David Reimann "LEGO to communicate Math", and Chris John "Making Kolam Accessible". Wonderful ideas for playful #MathArt.

Marta Kopyt in front of the title slide of her talk.

Dave Reimann next to a slide showing a LEGO sculpture called "Orderly Tangle" from 2024.

Chris is next to a slide titled "Symmetry: Rotational and Reflective," showing two Kolam illustrations.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The second plenary #MathArt talk is by Claire Moriarty, who speaks about "Semiotics, Ease, and Elegance: Oliver Byrne’s Elements of Euclid." (archive.bridgesmathart.org/2026/bridges...) It is wonderful to learn about the (historical) background of this famous and richly illustrated book. (2/2)

Claire Moriarty on stage next to her title slide with a triangle from the book she's discussing.

A collection of artworks from Kadinsky, Taeubner-Arp, de Stijl, etc. next to images from Byrne's Elements.

A page from "The Book" illustrating the composition of text and visuals elements.

Three images from the lesser-known "The Young Geometrician" by Byrne.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The first plenary talk at the Bridges #MathArt conference today is by children’s book author Amy Alznauer. (archive.bridgesmathart.org/2026/bridges...) She wrote a book on Ramanujan and a new one on Marjorie Rice, which is great! You can find it here: www.penguinrandomhouse.com/books/774224... (1/2)

Amy Alznauer on stage next to a slide with a diagram illustrating the narrative structure of a tale.

Amy Alznauer on stage next to a slide with a photo of the children's book's illustrator and some of the illustrations.

A page from the book on Marjorie Rice featuring Venn diagrams.

A page from the book on Marjorie Rice featuring a cat and some geometric drawings.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The final activity for this day at the Bridges #Mathart conference is the "Formal Music Night". It is led by "The Irish Dance Experience" and takes place in the wonderful Quadrangle Building of the Galway University campus. We get to try a Céilí and a Riverdance. Great fun!

The beautiful Quadrangle Building of the Galway University campus.

The participants of the conference are filling the room listening to the instructions given.

A view along an aisle that has formed between two groups who are practicing Irish dancing.

A group of people dancing to an Irish Waltz.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The third and final talk of the day is given by Robin Houston, who is looking into the mathematics of designing "Caltrops". (archive.bridgesmathart.org/2026/bridges...) He shows us a surprising variety of 3D-printed caltrops. (3/3)

A caltrop derived from a regular tetrahedron is sitting in front, with Robin looking at a slide labeled "Roman caltrop" in the back.

A set of three 9-spiked caltrops is sitting in front with Robin in the back.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The second talk is by Sabetta Matsumoto, "On the Group Structure of 'Magic' Leatherworking Braids." (archive.bridgesmathart.org/2026/bridges...) She teaches us how to create magic braids ourselves (which, even with instructions, is surprisingly challenging). (2/3)

Sabetta is standing next to a slide that shows several examples of magic braids.

Sabetta is pointing towards a slide titled "Pure braid group PB_n" with several images of braids illustrating mathematical notation.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The first talk in the second afternoon session at the Bridges #MathArt conference is by Henriette Lipschütz, Ulrich Reitebuch, and me, speaking about our paper "Borromean Braid Crossings from the Triaxial Grid." (archive.bridgesmathart.org/2026/bridges...) Happy to answer questions on this. (1/3)

Uli, Henriette, and I are standing in front of a slide that I am pointing at. The slide shows the Borromean rings and three Borromean braids.

Henriette explains how to fix integrated defects by pulling a strand around the defect.

All three of us are standing in front of a slide with eight hand-crafted examples resulting from our technique.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The last talk of this session is by Helena Verrill, who employs "Colour Pooling on Hilbert Curves." (archive.bridgesmathart.org/2026/bridges...) She investigates what happens when coloring the line that is bent into the space-filling curve and what patterns emerge. (3/3)

Three pieces of cloth with mechanically stitched space-filling curves.

A handout from the talk with four columns and five rows of space-filling curves.

A 3D-printed space-filling curve filled with colored marbles.

Helena stands next to a slide titled "What is colour pooling of the Hilbert curve?" that holds three examples.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

Next is Kerry Mitchell, who is "Creating Art with Space-Filling Curves." (archive.bridgesmathart.org/2026/bridges...) He takes some of the well-studied space-filling curves and rearranges/reinterprets them in new, artistic ways. (2/3)

A slide with two space-filling curves derived from hexagonal shapes, labeled "Hex Curve I" and "Hex Curve II".

A slide titled "Multiple Copies of Curve" with four different images that all show space-filling curves copied next to themselves.

A slide titled "Solid Regions" with four space-filling curves on the left and an overlay on the right.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 07/08/2026

The first afternoon session of the Bridges #Mathart conference is dedicated to space-filling curves. Kicking us off is Shengyi Wang, with the talk "From Patterns to Maze Solutions: An SMT-Based Construction." (archive.bridgesmathart.org/2026/bridges...) A wonderful way to interpret mazes! (1/3)

Shengyi Wang in front of the title slide of their talk, titled "From Patterns to Maze Solutions", with a maze on the right side, the path through the maze highlighted in red, which forms an S-shape.

A slide titled "Pipeline Overview" indicating three stages: 1. Grid positions, 2. Solution path, and 3. Maze construction.

Shengyi in front of a slide that shows a 3D view of the maze they generated.

A maze with the optimal path through the maze highlighted in red. The path spells "Art".

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 06/08/2026

The second keynote today is by @beesandbombs.bsky.social, who talks about "My Gifs" (archive.bridgesmathart.org/2026/bridges...), including the question of how to pronounce the G in the title. He shares several elements from his "box of tricks" with us that make his animations so captivating. (2/2)

Dave in front of the title slide of his talk.

An overview of GIFs from Dave's old Tumblr blog.

A set of nested n-gons, with a triangle in the center, surrounded by a square, surrounded by a pentagon, etc. with a black dot running around each of the n-gons.

A still from a GIF of Dave, showing rotations of the triangles of the icosidodecahedron.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 06/08/2026

This morning, we continue the Bridges #MathArt conference with the keynote talk by @nicksayers.bsky.social. He tells us about "Math-Art with Meaning: Explorations in Artistic Mathematics," drawn from personal experience. (archive.bridgesmathart.org/2026/bridges...) (1/2)

Nick Sayers in Front of his title slide with his name and the talk's title.

Nick Sayers in front of a slide that shows a spirograph built from bicycle parts that "paints" by letting paint trip on a black canvas.

A space-filling Hilbert curve built from sand castles.

Four long-term exposure photographs next to each other that assemble a 360° view. Three show the sun's paths over the days that the photos were exposed.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

We close the first day of this year's Bridges Mathart conference with the opening reception of the #MathArt exhibition. Find an overview of all accepted artworks here: gallery.bridgesmathart.org/exhibitions/... So much cool #MathArt!

A table with several decorated spheres on the left and two large Moiré displays. In the background, there are many people looking at various #MathArt works.

A large metal frame with several metal wires arranged in it. Next to it are some #MathArt pieces on the table. In the background, there are many people looking at various #MathArt works.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

Henriette Lipschütz and Ulrich Reitebuch give both following talks: In "Hitomezashi: One Piece to Make Them All"(archive.bridgesmathart.org/2026/bridges...), they puzzle 🧩, and in "Hitomezashi Off and Inside the Square Grid" they generalize. (2/2) (archive.bridgesmathart.org/2026/bridges...)

Henriette is pointing at a slide with the title "One Piece Only Examples." The slide has several depictions of triangle arrangements.

Ulrich stands next to a slide that shows three different jigsaw puzzles, all forming different Hitomezashi patterns.

Ulrich is standing next to a slide that is titled "Realizable Wallpaper Groups", showing twelve images titled by corresponding groups.

Henriette is pointing at a slide titled "Results" with five photographs of hand-crafted Hitomezashi patterns.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

The second afternoon session at the Bridges #MathArt conference is "Hitomizashi Galore": The first talk is by Katherine Seaton on "Interleaved Friezes: Celtic Knotwork and Hitomezashi." (archive.bridgesmathart.org/2026/bridges...) She talks us through which Friezes can be done via Hitomezashi. (1/2)

Katherine Seaton in front of a slide titled "Mathematical hitomezashi (one-stitch sashiko)" with two example pictures of Hitomezashi.

Katherine is pointing at a slide titled "More about binary strings" with a Hitomezashi representation of such a binary string.

Katherine is pointing at a slide titled "Roto-reflection example" with a corresponding example image of such a Hitomezashi.

Katherine stands next to a slide titled "Glide reflection (in fabric plane) example" with a corresponding example image of such a Hitomezashi.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

The third talk is by Etienne Boulais, telling us about "An Overengineered Physics-Based Dithering Algorithm." (archive.bridgesmathart.org/2026/bridges...) He uses a cellular automaton of the Ising model to create a variety of patterns that he uses to, e.g., create digital halftoning. (3/3)

Etienne Boulais next to a slide that shows a connected, rectangular graph with white/black cells, titled "Favorite Neighbors Rule".

Etienne is pointing to a slide titled "Favorite Neighbors Rule" that has four images with different patterns, arising from different parameters.

Etienne is next to a slide that shows four different black/white outcome images of his method.

Etienne shows two examples of varying patterns that arise throughout the optimization process.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

This is followed by Meurig Beynon, who talks about "Building Bridges: Making Sense of Mathematics and Art" (archive.bridgesmathart.org/2026/bridges...). He is taking a more philosophical stand on #MathArt and illustrates aspects from his paper that investigates "construals" and MathArt. (2/3)

Meurig Beynon in front of the title slide of his talk, titled "Building Bridges: Making Sense of Mathematics and Art".

Meurig gestures in front of a slide, "Making a Construal," which has a diagram on the left and explanatory text on the right.

Meurig in front of a slide titled "More Examples of Digital Construals ..." with example images on the left and titles for them on the right.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

The first afternoon session at the Bridges #MathArt conference has David Swart speak about "Spaces Filling Curves" (archive.bridgesmathart.org/2026/bridges...). He employs an optimization algorithm to weave a strip of paper around a sphere, resulting in fascinating #MathArt patterns. (1/3)

Dave Swart pointing at a slide with a sphere on the left and a rectangle on the right, both covered by lines.

Dave Swart in front of a projector, showing a slide with three rectangles showing various paper strips and one sphere made from a woven paper strip.

Dave Swart pointing towards a slide that collects the achievements of his method. On top of the slide is a sphere, woven from a dragon shape that eats its own tail, next to the paper strip that is used to weave the sphere.

Dave Swart in front of a slide titled "Questions" with the same dragon sphere and its corresponding strip.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

This year's Bridges #Mathart conference's second keynote is given by @ayliean.bsky.social - "It's about time" (which was both about time topic-wise, but also about time for her to give a talk at this conference). She gives a fascinating account of time across her various #MathArt projects.

Ayliean on a stage in front of a screen showing a still from one of her videos, drawing lines on paper.

Ayliean on a stage in front of a screen showing a slide with four associations on "What do you recognise as Maths?" Numbers, Algebra, "Real world", and "the struggle is real".

$Ayliean on a stage in front of a screen showing a fractal curve and some computations to determine the extent of the curve.$

Ayliean on a stage in front of a screen with a slide saying "CAN HUMANS SAY THE LARGEST PRIME NUMBER BEFORE WE FIND THE NEXT ONE?"

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

The first keynote at the Bridges #Mathart conference is by George Hart, speaking about "Math/Art at the Dawn of AI." archive.bridgesmathart.org/2026/bridges... Starting from his own experience as a sculptor, he investigates how far AI can be leveraged to create original sculptures and research.

George Hart at a podium next to a screen that shows him next to a MathArt sculpture.

George Hart next to a screen that shows a slide titled "3D Objects / Sculpture" with a detailed prompt to AI to create a new MathArt sculpture.

A slide titled "3D Objects / Sculpture" showing an AI-generated sculpture.

A screen showing a vibe-coded app for a "Stretched Goldberg Net".

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 05/08/2026

We're kicking off this year's Bridges #Mathart conference with warm welcomes by the former president of the Bridges organization, George Hart, the newly elected president, Craig Kaplan, local organizer Rachel Quinlan, and head of the #math school, Cathal Seoighe. #MathArt

Local organizer Rachel Quinlan at a podium.

Head of the Galway math school, Cathal Seoighe, at a podium.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 04/08/2026

Preparations are well underway for the Bridges #Mathart conference starting in Galway, Ireland, tomorrow. The #MathArt exhibition is being set up, and we'll have a set of wonderful talks and activities. As every year, I'll keep you posted! www.bridgesmathart.org/b2026/

A couple of transparent cubes hanging from a pine tree in front of a university building.

A collection of mostly origami-based mathematical art arranged on a table.

A shot of a large hall with several tables and stands on the wall. Mathematical art is placed all around and people are looking at it.

A large #MathArt work, composed of different crocheted pieces hanging in front, with some tables with MathArt in the back.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 29/07/2026

Coincidentally, next year's theme for the @idm314.bsky.social is "Mathematics, AI, and our Future." So why not drop by our workshop and try some #AI for mathematics yourself?

The center of the image reads in bold, white letters: "MATHEMATICS, AI AND OUR FUTURE". This text is surrounded by a labyrinth with different colored paths.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 28/07/2026

Our work is now on display at the #ICM2026. If you are there, please give it a look in the #MathArt gallery. There are more pictures here: www.imaginary.org/event/imagin..., and you can find a gallery of all exhibited mathematical art here: www.imaginary.org/gallery/icm-....

A corner of a pop-up gallery space at the ICM. There are twelve prints of mathematical art hanging on the walls, with small description plaques. A person is seen from behind, looking at one of the prints.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 08/07/2026

Sneak peek into the International Congress of Mathematicians (ICM): There will be a #MathArt gallery, which is already #openAccess at www.imaginary.org/gallery/icm-.... It does feature my work "Heart of Domain Coloring" (with H. Lipschütz and U. Reitebuch). Go and give it a look!

Domain coloring allows for the visualization of complex functions with color-lookups via a pre-image. The white grid lines correspond to function values with integer real or imaginary part. All other complex numbers are mapped to different colors by their angle to the positive real axis, using four color spectra, one for each quadrant. By placing zeros and poles in a highly symmetric configuration, we deform the coordinate axes shown in black into heart shapes. The image was created digitally by a pixel-wise evaluation of the input function.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 01/07/2026

A polar quad tree on top of a Poincaré disk model of hyperbolic space. Done by my Master's student Hunter v. Geffen, it enables acceleration of dimensionality reduction into hyperbolic space #MathSky. Details: ms-math-computer.science/publications... Quote post with something that is a circle. 🔵

Poincaré disk model of the hyperbolic plane with a large set of somewhat clustered, light gray points. On top of this, a hierarchical structure that resembles a quad tree, but with circularly bent pieces. The hierarchy is almost everywhere sparse, except for a dense area in the east of the disk around a bold, red X-mark.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 20/06/2026

Mondrian is great for doing some #MathArt. Here's our own take, which you can find in this paper (archive.bridgesmathart.org/2018/bridges...), taking Mondrian's paintings to the third dimension 🎲

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 19/06/2026

Apparently, some #AI models have me in their weights. They could learn more about my #MathArt activities, though. Curious? Check yourself at intheweights.com

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 09/06/2026

On Friday, June 12, we'll have the next #illustratingMath seminar online, taking us "From Fractions to Fractals". Alexander Thomas will give the main talk, flanked by Show & Ask of Juliet Fiss and Caroline Davis. We start at 9am Pacific/12pm EST/6pm Europe. See you then!

$Event poster for the "Illustrating Math Seminar Online" on Friday, June 12. The poster features a vibrant purple background and a large, glowing geometric circle fractal pattern in shades of pink and yellow. Text details a talk titled "From Fractions to Fractals" by Alexander Thomas (University of Lyon), whose black-and-white portrait shows them holding a geometric wire model. The seminar takes place at 9 AM Pacific / 12 PM Eastern / 6 PM Central Europe on Zoom via an included QR code. Also features "Show and Ask" presenters Juliet Fiss and Caroline Davis. Website link: https://illustratingmath.org/$

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 04/05/2026

Friday, May 8, we'll have the next #illustratingMath seminar online devoted to "Illustrating Tilings". Chaim Goodman-Strauss will give the main talk, flanked by Show & Ask of Evelyn Sander and Prajwal D'Souza. We start at 9am Pacific/12pm EST/6pm Europe. See you then!

Poster for the Illustrating Math Seminar Online titled "Illustrating Tilings" by Chaim Goodman-Strauss from the National Museum of Mathematics. It takes place Friday, May 8, at 9AM US Pacific / 12PM US Eastern / 6PM Central Europe. Includes a QR code and link to join via Zoom.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 23/04/2026

Last week, we had the annual spring dinner of the Delft Young Academy, on the very relevant topic of "Academic career and personal life". After some short input, we had an inspiring panel discussion that carried over into many fruitful dinner conversations.

Martin Sand, a person in a dark suit, stands before a large screen and points toward a data table on a slide. The presentation is titled "Survey of the extent and effects of structural overtime at the Dutch universities." They hold a microphone while addressing a seated audience in a room with floral wallpaper and large windows.

Eva Lantsoght, a person wearing a black top and a bright blue skirt, stands next to a presentation screen and smiles while speaking into a microphone. The slide is titled "Work-life balance in academia" and includes logos for TU Delft and USFQ. A laptop on a stand is positioned in front of the screen.

Martin Sand stands at the front of a room, holding a microphone and notes while presenting a slide titled "Understanding the problem - Internationality" which features a bar chart. To the right of the screen, a panel of four people, including Eva Lantsoght, sits on high stools and listens to the presentation.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 18/04/2026

This is a result of our fabulous #illustratingMath trimester at the institute Henri Poincaré in Paris, which ran from January till March this year. Attached is an image of the piece in the #art exhibition at the Maison Poincaré. Definitely give Henry's video a look!

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 17/04/2026

Here's the chance to get into another fabulous #MathArt project with @mathgrrl.com. Attached are some photos of the result of the last project, which was awesome! Subscribe with her to stay up to date on the new endeavor!

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 24/03/2026

Closing off the morning, we get to hear a set of eight lightning talks⚡️Pictures show Yuri Sulyma, Sara Varljen, and Zachary Greenberg. One other talk was by Dina Buric about her Arnold Cat Map tool: www.dina-buric.com/cat-map-encr.... Finally, a spherical group picture by @henryseg.bsky.social.(3/3)

$A person speaks into a microphone while presenting a slide titled "Illustration, experimentation, and interactivity in algebraic K-theory" by Yuri Sulyma. The slide contains advanced mathematical notation regarding truncated polynomial algebras $\mathbb{F}_p[x]/x^e$ and odd K-theory groups $K_{odd}$. Formulas are displayed in a clean, serif font.$ $A person points to a slide titled "Regions of influence for $k$." The slide defines $k$ as an imaginary quadratic number field $\mathbb{Q}(\sqrt{D})$ and shows two 3D wireframe diagrams labeled $\mathbb{Q}(i)$ and $\mathbb{Q}(\sqrt{-3})$. The diagrams illustrate "regions of influence" as complex, branching mesh structures rising from a 2D plane.$ $A person with long hair speaks in front of a slide divided into three columns: "Finite," "Affine," and "Doubly Extended." Each column displays three different mathematical visualizations, ranging from simple 2D polygons and line graphs to incredibly dense, colorful fractals and hyperbolic tilings that resemble complex floral or cellular patterns.$

A spherical group photo featuring a large crowd of people gathered in front of the Institut Henri Poincaré in Paris. Each person in the group is smiling and waving or holding their hands up toward the camera lens, creating a sense of shared excitement. They are positioned in an outdoor space between buildings, with a prominent curved red-brick structure in the background displaying the French and European Union flags. The spherical perspective distorts the surrounding trees, parked cars, and neighboring buildings, with bright sunlight creating a lens flare on the left side of the frame.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 24/03/2026

In the morning, we get to hear four talks from Cruz Godar, @stevejtrettel.bsky.social, Jonathan Love, and Claire Burrin. Jonathan spoke about "Sonification in number theory," you can listen to their results here: jonathanlove.info/mathmusic/ (2/3).

$A person stands at the front of a classic university lecture hall, gesturing toward a large projection screen. The slide is titled "Interactivity, Fidelity, and Polish: Building Modern Math Illustration" by Cruz Godar. A colorful, iridescent Mandelbrot set fractal is displayed on the right side of the slide. Below the screen is a large, clean blackboard and a wooden desk with water bottles and microphones.$ A person wearing a cap and glasses smiles while holding a presentation clicker in a lecture hall. The projected slide behind them is titled "Visualizing Elliptic Curves over Finite Fields" by Steve Trettel. It features a large, lime-green 3D visualization composed of many small spheres arranged in a complex, recursive trefoil-like spiral.

A person wearing a cap and glasses smiles while holding a presentation clicker in a lecture hall. The projected slide behind them is titled "Visualizing Elliptic Curves over Finite Fields" by Steve Trettel. It features a large, lime-green 3D visualization composed of many small spheres arranged in a complex, recursive trefoil-like spiral.

$A person gestures toward a screen displaying a $3 \times 4$ grid of twelve pale blue spheres. Each sphere is covered in a unique, intricate red point-cloud pattern, likely representing mathematical data or a specific distribution. To the right of the screen, a list titled "Lightning Order" is written on the blackboard, naming various presenters.$

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 24/03/2026

Before looking at today's second day of the third #illustratingMath workshop at the Institut Henri Poincaré, I would like to share some of yesterday's results. Here are two images by @bernatree.bsky.social and @henryseg.bsky.social, respectively, using Voronoi cells for visualization. (1/3)

$A colorful 2D Voronoi diagram arranged in a phyllotactic spiral pattern, mimicking the natural growth found in sunflowers. The polygonal cells are shaded in a pastel palette of blue, green, yellow, and purple. To the right, a text panel explains the mathematical parameterization for $N = 333$ nodes, defining Cartesian coordinates via $r_n = c\sqrt{n}$ and $\theta_n = n\varphi$, utilizing the golden angle $\varphi = \pi(3 - \sqrt{5})$.$ $An intricate 2D geometric tiling representing an aperiodic Penrose P3 structure. The image is densely packed with small polygonal cells in various pastel colors, creating a complex, non-repeating pattern. A text panel on the right describes the "Cut-and-Project Method," noting that the vertices are generated by mapping a discrete 5-dimensional hypercubic lattice $\mathbb{Z}^5$ onto a 2D plane.$ A 3D digital render of a cube composed of numerous interlocking Voronoi cells. The cube features a vivid spectral gradient, transitioning horizontally from red on the left through yellow, green, and blue, to deep purple and magenta on the right. The object is displayed on a neutral gray perspective grid.

A 3D digital render of a cube composed of numerous interlocking Voronoi cells. The cube features a vivid spectral gradient, transitioning horizontally from red on the left through yellow, green, and blue, to deep purple and magenta on the right. The object is displayed on a neutral gray perspective grid.

A 3D digital render showing a "partial" or "exploded" view of the same Voronoi cube. Many of the internal and external cells have been hidden, revealing the gaps and the complex 3D polyhedral shapes of the remaining colorful cells. The floating cells maintain their original positions, suggesting the ghostly outline of the full cube.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 24/03/2026

The afternoon was devoted to hands-on activities. Here are example pictures from a discussion on #illustratingMath in the classroom, a short course on learning how to draw #math, a work group on visualizing the p-adics, and a work group on visualizing ideal class groups. (2/2)

A group of people are seated at wooden tables arranged in a U-shape within a bright room. One person, wearing a colorful patterned shirt, stands and addresses the group. Several laptops and notebooks are open on the tables, and a French recycling poster is visible on the wall.

Six people are gathered around a circular table in a common area, focused on several small 3D-printed models and sketches. One person stands and gestures toward the objects on the table. A large chalkboard with chalk markings and a white geometric sculpture are visible in the background.

A view from the back of a tiered lecture hall where several people are seated on wooden benches. At the front, a person sits at a desk facing a large projection screen that displays a detailed circular illustration. The chalkboards flanking the screen are filled with mathematical equations.

A group of people are in a casual lounge area with pink and grey modular seating. They are engaged in a discussion while looking at a laptop screen. In the background, a green chalkboard is covered in mathematical formulas, and a wooden slat wall has various papers attached to it.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 24/03/2026

Yesterday, we kicked off the third and last #illustratingMath workshop at the Institut Henri Poincaré, dedicated to "Integrating Research and Illustration in Number Theory." In the morning, we heard four great talks. Here are Roice Nelson's visuals: roice3.org/paris2026/. (1/2)

A person stands at the front of a lecture hall next to a large chalkboard and a wooden desk. Behind them, a large screen displays a presentation titled "The power of pictures" by Andrew V. Sutherland, MIT, featuring several mathematical graphs and distributions. They have their hands clasped and are looking toward the audience.

A person stands at a long wooden desk in a lecture hall, looking down at a screen. On the wall behind them, a slide titled "The continuum" shows a sequence of geometric shapes, including aperiodic tiles labeled as "chevron," "hat," and "turtle." A large black chalkboard is positioned below the projection.

A person stands in a lecture hall, gesturing with their hands as they speak. The presentation slide behind them is titled "What Color Should This Pixel Be?" and includes the subtitle "Illustrating Number Theory, March 2026." The slide background features a pattern of thin, radiating orange arcs.

$A person stands at the front of a classroom, looking toward a large projection screen. The slide, titled "The Farey triangulation," displays a complex network of lines and fractions representing a mathematical tree. Text on the slide also mentions the Stern-Brocot tree.$

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 13/03/2026

🚨Correction🚨 The talk will be tomorrow, MARCH 13th, at 5 pm Europe! (Not February and not 6 pm, thanks to some copy-paste errors and the US switching from daylight saving to summer time earlier than Europe, respectively.) Here's a corrected poster👇See you all there & then.

A brown promotional flyer for "Live from the Institut Henri Poincaré: Pt II," hosted by the Illustrating Math Seminar Online. A circular photo shows the arched brick entrance of the IHP in Paris. The text describes a "show and ask" format where mathematical illustrators share what they have been working on. The event is Friday, March 13, at 9 AM PT / 12 PM ET / 5 PM CET. A QR code and the website illustratingmath.org are included for the Zoom link.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 12/03/2026

Tomorrow, on Friday, the 13th, join us for the second "Live from the Institut Henri Poincaré" #illustratingMath seminar online. You will get to hear what people have been working on during the current trimester program. We start at 9am Pacific/12pm Easter/6pm EUR. See you then!

A promotional flyer for a virtual event titled "Live from the Institut Henri Poincaré: PT II."

The top left features a circular photo of the arched brick entrance to the Institut Henri Poincaré in Paris, with the name of the institute engraved in the stone above the door.

Event Description:
The text states that a group of mathematical illustrators is working at the institute this winter. In this "show and ask" format, a variety of participants will share what they have been working on.

Schedule and Logistics:

Date: Friday, February 13.

Times: 9 AM US Pacific, 12 PM US Eastern, and 6 PM Central Europe.

Platform: The talk will be held on Zoom. A QR code is provided in the bottom right corner to join the meeting.

Website: illustratingmath.org

The footer indicates that the Illustrating Math Seminar Online takes place on the second Friday of every month.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 12/03/2026

Are you interested in #GeometryProcessing? Are you great with programming in C++? Are you a Master's/PhD student or a Postdoc? Then please apply for this project for the #GSoC. This is a great way to boost your portfolio while contributing to a widely used OpenSource library.

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 27/02/2026

These are some lovely #domainColoring examples! A great way of #illustratingMath. We have just published a share reimplementing some of our results on donation coloring here: www.shadertoy.com/view/t3yfz3 (It's hearts 💕)

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 27/02/2026

People who are into Sol LeWitt’s "Variations on Incomplete Open Cubes" or following @sollewitt.bsky.social, here is a new preprint from #illustratingMath colleague Mikael Vejdemo-Johansson, answering the question: What about incomplete versions of the other platonic solids? arxiv.org/pdf/2602.204...

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Dr. Martin Skrodzki @msmathcomp.bsky.social · 20/02/2026

I love going on the hunt for heart motifs in #math processes. Here's our try from a recent Bridges #MathArt paper. ms-math-computer.science/preprint/202...

A domain coloring image of a complex function. The center of the image shows two overlapping heart motifs.

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