Craig S. Kaplan✓

Mastodon @csk@mathstodon.xyz

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Followers

1.9K

Account age

9 yrs

🧰 Free analysis for Craig S. Kaplan

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Recently, Sébastien Labbé and Peter Selinger posted a preprint (https://arxiv.org/pdf/2604.20964) that describes a sophisticated construction for the hat tiling, based on what's called a Markov partition (see the thread by @pieter at https://mathstodon.xyz/@pieter/116484517078239617 for more details).
One nice side effect of their construction is that it provides a means of rendering the hat tilin

103 views Recently, Sébastien Labbé and Peter Selinger posted a preprint (https://arxiv.org/pdf/2604.20964) that describes a sophisticated construction for the hat tiling, based on what's called a Markov partition (see the thread by @pieter at https://mathstodon.xyz/@pieter/116484517078239617 for more details). One nice side effect of their construction is that it provides a means of rendering the hat tilin

78 views The other Bridges paper with my students was by Saba Molaei. Her work is inspired by the legendary Silicon Graphics logo (designed by Scott Kim!). The logo can be interpreted as a single closed path that visits every edge of a cube. Naively, that's impossible, but you can do it if you allow yourself to visit some edges *twice*. The inevitable question is: for what other polyhedra can you do this,

So I guess I have a merch table now? The University of Waterloo created a retail collection based on the hat. Lots of fun stuff. And no, I don't get a cut of the profits. :monotile:

39 views So I guess I have a merch table now? The University of Waterloo created a retail collection based on the hat. Lots of fun stuff. And no, I don't get a cut of the profits. :monotile:

Two of my graduate students have absolutely terrific papers at Bridges this year. The paper by Tuan Dung (Brian) Do is about drawing analogues of standard visual illusions in hyperbolic geometry. Some illusions carry over nicely, and some don't work, but all the results are fun to look at. I hinted at this project earlier this year as part of Genuary (image reposted here).
The full paper is at htt

30 views Two of my graduate students have absolutely terrific papers at Bridges this year. The paper by Tuan Dung (Brian) Do is about drawing analogues of standard visual illusions in hyperbolic geometry. Some illusions carry over nicely, and some don't work, but all the results are fun to look at. I hinted at this project earlier this year as part of Genuary (image reposted here). The full paper is at htt

📊 Post engagement

Avg engagement / post

1.9%

Engagement vs followers

Jun 2017

On Mastodon since

🔥 Top post: Recently, Sébastien Labbé and Peter Selinger posted a preprint ( · 103 likes + reposts

📊 Activity & format

Posting cadence

1 / week

A lower-frequency account — each post lands with more weight.

Content mix

Mostly text

Recent: 7 text · 3 image · 2 video.

Follower / following

13×

Follows 141 back. A strong ratio — an audience that follows them, not a follow-for-follow network.

Recent posts

View on Mastodon ↗

▶ 🔥 Top post Recently, Sébastien Labbé and Peter Selinger posted a preprint (https://arxiv.org/pdf/2604.20964) that describes a sophisticated construction for the hat tiling, based on what's called a Markov partition (see the thread by @pieter at https://mathstodon.xyz/@pieter/11648451707823… ★ 103

Maybe I'm old and out of touch with the state of academic publishing. But if you send me a request to review a 25-page journal submission on a technical subject, and ask that I return my review in two weeks, I'm going to assume your journa… ★ 23 Bridges recently received an inquiry from a parent of a 10-year old kid obsessed with fractals, who's having a hard time finding a community (ideally, in person). They're in the Pacific Northwest. Any thoughts about in-person events, facil… ★ 9 I haven't done much 3D printing of late, especially since shapeways went offline. I now have a few models I'd like to print, ideally in colourful SLS nylon. Where are people doing that sort of printing these days? I'd be grateful for any r… ★ 9 Following closely on the heels of this year's papers, here's the online gallery for the Bridges 2026 Exhibition of Mathematical Art, Craft, and Design! https://gallery.bridgesmathart.org/exhibitions/bridges-2026-exhibition-of-mathematical-… ★ 24

The other Bridges paper with my students was by Saba Molaei. Her work is inspired by the legendary Silicon Graphics logo (designed by Scott Kim!). The logo can be interpreted as a single closed path that visits every edge of a cube. Naivel… ★ 78

Two of my graduate students have absolutely terrific papers at Bridges this year. The paper by Tuan Dung (Brian) Do is about drawing analogues of standard visual illusions in hyperbolic geometry. Some illusions carry over nicely, and some … ★ 30 The Bridges Archive has been updated with 2026 papers: https://archive.bridgesmathart.org/2026. Stop by and enjoy a trove of math-art delights! ★ 35

So I guess I have a merch table now? The University of Waterloo created a retail collection based on the hat. Lots of fun stuff. And no, I don't get a cut of the profits. :monotile: ★ 39 Also, this is somewhat more specialized, but here's a first draft (with no documentation) that draws just the Markov partition itself: https://www.shadertoy.com/view/s3lGDM. ★ 10 As promised, here's the Shadertoy page for a GPU shader that draws the hat tiling: https://www.shadertoy.com/view/s3lGD7. Hopefully the code makes sense (I've tried to organize it to be easy to work with), and people will find fun ways to … ★ 47

▶ The construction involves defining a fractal colouring of the plane, and sampling from the fractal using points in a lattice (the vertices of a tiling by equilateral triangles). @pieter asked about visualizing the result of sliding the lat… ★ 13

🐘 Community & instance

Home server

mathstodon.xyz

Their home server on the fediverse — the instance a creator picks signals the community they belong to.

✅ Link-verified

Verified link

Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.

On Mastodon since

Jun 2017

An OG fediverse account from Mastodon's early years — a long, established presence.

💡 Facts

🗓️Joined Mastodon in 2017 — 9 years ago.

👁️Averages 35 views per post.

📤Posts about 1× per week.

🛡️ Audience credibility

89/100

Excellent Credibility score

99%

Real Real audience

Low Fake-follower risk

High Data confidence

Est. 99% real, active audience · Low fake-follower risk.
Strong engagement (~1.9% of followers engage each post) — an active, real audience.
Verified account.
Established account (9+ years old).

Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.

About

Mathematics, Computer Science, Art, Design, Music, Soup, Pedantry. he/him/anything

📸 Gallery

$The construction involves defining a fractal colouring of the plane, and sampling from the fractal using points in a lattice (the vertices of a tiling by equilateral triangles). @pieter asked about visualizing the result of sliding the lattice relative to the fractal, which should cause whole sections of the tiling to "flip" from one configuration to another as collections of sample points move fr$

🔀 Audience overlap

Estimated

Estimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.

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Craig S. Kaplan✓

Make a deal with Craig S. Kaplan

Known for

📊 Post engagement

📊 Activity & format

Recent posts

🐘 Community & instance

💡 Facts

🛡️ Audience credibility

About

📸 Gallery

🔀 Audience overlap

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