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Reposted by Henry Segerman

Dr. Martin Skrodzki @msmathcomp.bsky.social · 3d

The #illustratingMath Seminar Online returns on Friday, October 10th, 9 am Pacific / 12 pm Eastern / 6 pm Europe. @3blue1brown.com will be "Exploring Zeta Function Visualizations." Gabriel and Jim will provide some "Show and Ask" input. See you online on Friday!

A dark-themed event poster titled "EXPLORING ZETA FUNCTION VISUALIZATIONS." The poster includes an abstract about visualizing the Riemann Zeta function. A colorful, three-dimensional plot of a mathematical function dominates the right side. The bottom features a circular photo of the presenter, Grant Sanderson from 3Blue1Brown. The event is scheduled for Friday, October 10, with times listed, and will be held on Zoom.

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Henry Segerman @henryseg.bsky.social · 13d

@robertfathauer.bsky.social ?

Reposted by Henry Segerman

robertfathauer.bsky.social @robertfathauer.bsky.social · 13d

Submissions are now being accepted for the Exhibition of Mathematical Art to be held as part of the Joint Mathematics Meetings, Washington, DC, in January of 2026. Apply online through October 15 at gallery.bridgesmathart.org. pic.x.com/MGSEyexSzo

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Henry Segerman @henryseg.bsky.social · 13d

This sounds like a similar idea to a project by Jeffrey Ventrella, see archive.bridgesmathart.org/2024/bridges... I don’t think he looked at fairness, and he made polyhedra with the points as vertices rather than faces.

The Bridges Archive: 2024 paper

archive.bridgesmathart.org

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Henry Segerman @henryseg.bsky.social · 13d

Correct. And rigging up the slider at that angle would not be easy either!

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Henry Segerman @henryseg.bsky.social · 14d

Just added a post with some of the behind the scenes details and unused footage from this video on my Patreon: www.patreon.com/HenrySegerman

Photograph of a camera with a probe lens mounted on a slider.

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Henry Segerman @henryseg.bsky.social · 14d

You can buy these at www.mathartfun.com/DiceLabDice....!

The Dice Lab Unique Designs

www.mathartfun.com

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Henry Segerman @henryseg.bsky.social · 14d

New dice from The Dice Lab (me and Robert Fathauer), which may (?) be useful if you regularly write equations. youtube.com/shorts/fgMox...

Dice with greek letters on the faces, on a sheet of paper with a very long equation on it.

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Henry Segerman @henryseg.bsky.social · 24d

It’s a single loop.

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Henry Segerman @henryseg.bsky.social · 24d

In this image, our algorithm fills the sphere much more completely than Thurston's does, despite using ten times fewer edges.

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Henry Segerman @henryseg.bsky.social · 24d

The black curve is our recreation of Thurston's original algorithm to approximate Cannon-Thurston maps. The boundary between the green and purple regions is an approximation generated by our new algorithm based on veering triangulations.

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Henry Segerman @henryseg.bsky.social · 24d

This image (made with Saul Schleimer) shows two different ways to approximate the Cannon-Thurston map associated to the figure-eight knot. Cannon-Thurston maps are space-filling curves, a bit like the Hilbert curve except that these fill a sphere rather than a square.

A very squiggly black curve on a sphere. The sphere is divided into green and purple regions by a less squiggly, but more sphere-filling curve.

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Reposted by Henry Segerman

robertfathauer.bsky.social @robertfathauer.bsky.social · Sep 5

Submissions are now being accepted through September 14 for SCULPT 2025. Accepted work will be presented in a ZOOM Show and Tell event on November 7. In addition, works will be digitally showcased in the exhibition section of SCULPT 2025 and in a proceedings volume.

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Henry Segerman @henryseg.bsky.social · Aug 29

I learned thumb then index then middle. That seems like the most natural order to count your fingers.

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Henry Segerman @henryseg.bsky.social · Aug 23

Bathsheba mostly worked in bronze infused sintered steel. That process is no longer available from any supplier, according to Bathsheba: mathstodon.xyz/@bathsheba/1...

Bathsheba Grossman (@[email protected])

Binder jetted steel with bronze infiltration is no more: the last source has discontinued the technology. All service bureaus that offered this material have taken it down, which tends to confirm my (...

mathstodon.xyz

Reposted by Henry Segerman

Dr. Martin Skrodzki @msmathcomp.bsky.social · Aug 13

Starting the #illustratingMath talks at the @icerm.bsky.social today is Elliot Kienzle, who aims to settle the question how "To draw a torus." Like all good answers, his is based on differential geometry, taking the geometry of the torus into account when drawing. And Escher's there, too😄

A person is giving a talk, with a split screen showing them and a slide with a hand-drawn diagram of a perfectly smooth torus with the title "The Perfect torus?".

A split screen shows a person presenting and a slide with a hand-drawn diagram illustrating the difference between "Mathematical Precision" and "Mathematical Imprecision" when constructing a torus.

A split screen shows a speaker and a slide with a hand-drawn diagram explaining the "Gauss map/Normal map," using a torus and a sphere to illustrate the concept.

A person presents with a split screen, showing them and a slide with a sketch of M.C. Escher's "Hand with Reflecting Sphere" and the word "Torus" written below it.

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Reposted by Henry Segerman

Dr. Martin Skrodzki @msmathcomp.bsky.social · Aug 11

Today, the one-week #illustratingMath workshop at @icerm.bsky.social starts. It is a week, packed with great talks on #images, #animations, #textiles, #sculptures, #dance, and #3dPrinting. All talks are being live-streamed, so go check out the schedule at icerm.brown.edu/program/topi... and join in!

icerm.brown.edu

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Henry Segerman @henryseg.bsky.social · Aug 10

I added a second post on my new Patreon, about my plans for a three-dimensional expanding racks design based on the srs net (also known as the Laves graph). See www.patreon.com/posts/135832...

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Henry Segerman @henryseg.bsky.social · Aug 8

The space-filling curve is the Cannon-Thurston map for a veering triangulation (with veering isosig gLLAQbecdfffhhnkqnc_120012). We prove that veering triangulations have Cannon-Thurston maps in an upcoming paper with Jason Manning.

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Henry Segerman @henryseg.bsky.social · Aug 8

I never got around to posting this animation I made with Saul Schleimer.This animates successively better approximations to a space-filling curve. (Or rather, you can tile the plane with the shape, and that gives the approximation to the space-filling curve.)

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Henry Segerman @henryseg.bsky.social · Aug 1

They generally do this by having health/damage numbers generally be very small: your attack might do three damage. Then an item that increases an effect by one makes a real difference to how you play, and feels like a real reward.

Henry Segerman @henryseg.bsky.social · Aug 1

This allows the game makers to mete out many tiny rewards, although few that really make much difference to the game. There is however something of a movement (particularly in indie games) to have the items you get be meaningful upgrades, and the numbers involved be really meaningful.

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Henry Segerman @henryseg.bsky.social · Aug 1

There is perhaps a parallel in video game damage/health numbers. There are many games that measure how much damage your sword (or whatever) does in hundreds or even thousands. This allows for a large number of items to collect that modify your damage output by one or two percent here or there.

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Henry Segerman @henryseg.bsky.social · Jul 30

Come to mathstodon, where the sources of timeline bugs are presumably less opaque!

Henry Segerman @henryseg.bsky.social · Jul 30

True. The cultural meaning is not that well correlated with the cardinal directions.