This week: Second conference of the #illustratingMath trimester at Institut Henri Poincaré, titled "Bridging visualization and understanding in Geometry and Topology." Talks are by Hugo Parlier, Érika Roldán, and yours truly. Play with Hugo's app here: quadratis.app/playPuzzle.h... (1/2)

the faintest hint #flameFractal #creativeCoding #algorithmicArt #processing

When your second profiterole falls on the floor and you’re like I was just waiting for the other choux to drop.

Love you, Minneapolis. Front and back of protest quilt.

I am ready at the drop of a hat to present to any league's competition committee exactly how gold drafting works, what it improves and what it weakens, how it would have to implemented for a specific sport, with simulations, gorgeous viz, the works. I am dead set.

Man I love our city, I love our mayor, I love love

“DHS is shutting down because it refuses to obey the law” is excellent framing

Personal view that a fairly blunt economist friend convinced me of is that despite what people say, almost nobody cares about privacy, in the sense of corporations and government not having their data. My hard line was "smart speakers" which just feels very invasive. But they're popular.

Work tasks today included thinking about a magic trick and Catalan numbers at the same time — living the dream!

I would just add an analogous lesson in the arena of elections for public office: It is not losing elections that, in themselves, constitutes failure; it is reproducing the cultural norm of treating those losses as a basis for demoralization, demobilization, and not trying again that's the failure.

My child and I were talking about scrabble and they wanted to verify: can ebb be spelled with one b or does it have to have two? And I responded: Two. Wait, did you really just ask: "Two b's or not two b's, that is the question?"

First slide appears... And in conclusion.... 😂

ICE is a reminder that the reason why 15 states once passed laws making it illegal to wear masks while armed was as a direct response to the racist terrorist actions of the Ku Klux Klan. firstamendment.mtsu.edu/article/anti...

Abstracts for the 2026 Grading Conference are due this week! www.centerforgradingreform.org/grading-conf...

I don’t really know what I expect in posting this, but maybe some people see it and can learn from it. I’ll call it “lessons from an unwilling immigration attorney.” 1/

If you’re a Kat person, bring a t-shirt to upcycle to our office tonight at 5PM and we’ll turn it into custom merch! You can join our phone bank bingo night too :)

If you are wondering how Mpls is, please consider how f***ed it is that "school dismissal is always a peak time for them" We and our schools and our kids are not okay. Our communities are not okay.

Things have been rather busy at the #illustratingMath trimester at the Institut Henri Poincaré for the last two weeks. A number of illustration projects have been started. I'll share some highlights in this thread. (1/6)

I definitely prefer actively-or-very-recently-being-primaried Hochul to other forms of Hochul

Aaand there you go: Trump’s sudden about-face on the most important Canada-US border crossing came after meeting with the billionaire family that owns the rival bridge. Nice scoop, confirming suspicions of everyone who has followed this file and is familiar with Trump www.nytimes.com/2026/02/10/w...

As usual, rahaeli has a solid rundown on the obnoxious worldwide pressures that have led Discord to its upcoming policy change.

“When you get right down to it, the point of One Million Experiments is that we’re always in a time of great need, and the goal is to be in relationship in ways in which we can build for each other what we all need.” millionexperiments.substack.com/p/11-porch-s...

Mazel tov and happy 4th birthday, Bolts! 🎂🎂🎂🎂 Everyone please follow @boltsmag.org & @taniel.bsky.social for just about the best local political coverage (and how those local events play into regional and national trends!) around.

Shooting Star, acrylic on canvas, 30x40in.

This is cellular automata applied to a staggered grid, like in beaded peyote stitch. All of these images were created with the same algorithm, what I call “Vines on a Fence.” The only difference among them is how I started each patch. I give the recipe for Vines on a Fence on page 105 of my new book

A cool article reddit led me to on how to make some cool math art! penplotter.art/p/algorithmi... #mathart #mtbos

This is so delightful

It’s good messaging, and Democrats across the country should be using it. And it’s powerful because it’s simple and connects concerns of the working and middle class to an admin that is hostile to those concerns and is instead laser-focused on elite impunity and interested of the uber-wealthy.

#sciart OMG gorgeous 😍

Quand l'IA s'occupe de cuisine française :

A little cellular automata to color your day #mathart

Metry and her husband of 4 years go to DHS to get their I-130 in motion. "Good news" a DHS employee told them, the form to start her naturalization was approved. DHS employee asks the husband to follow him through a secure door. When it locks behind him, ICE detains his wife to deport her.

Child at the podium: “A woo woo woo.” Mamdani: That’s how I felt when we came up with this plan. Together, we will expand the idea of what is possible in our city—and what sounds and noises we can make at a press conference.

@hockeyviz.com, inspired by Tuesday's PIT @ NYI game during which PIT had a line of 87, 67, and 17 and two defenders numbered 77 and 7, who I don't think actually were in the ice simultaneously, has there ever been a time when all five skaters on the same team all had the same jersey number mod 10?

School leaders, give your people time to just do math together. I promise it's SO worth it.

Sharp division in European temperature this afternoon. A feel of early spring in the air across S UK and France. After a mild December this winter is becoming very cold in E-NE Europe with no end in sight to strong freeze.

my guilty pleasure is cranking up the generator on minos.tessera.li up to higher values and just looking at the big tetris pieces

Amazing logistics for the 3D printed whistles

Flyer for a webinar on general strikes by May Day Strong NYC on Feb 05 @ 7:00–8:30pm ET. "Hear reports from Minnesota, learn about May Day and how to get involved in NYC organizing!" Speakers include Samir Sonit, Clauida Magana, Jackson Potter, Ms. Huang from CAAAV, Lamin Jatta. Link: bit.ly/454ACRb

(animation 48) #MathArt

It’s your city, from the sidewalk to the skyline. The David Dinkins Municipal Building’s rooftop is open & free to everyone, starting this June.

A common theme between the Kennedy Center, the East Wing, and Greenland is that POTUS views someone else’s property as a real estate project ripe for redevelopment.

I get why yall say it, but it’s not “ice out of mn” it’s “ice out EVERYWHERE” It’s not okay for them to pack up and just go somewhere else with this. No one deserves this, so we need to stop it here completely. That’s defunding, demoralizing, abolishing. That’s the goal.

Celeste Davis on gender and college celestemdavis.substack.com/p/why-boys-d... Matches my anecdotal experience.

I created some OpenSCAD code to print these slices/traces of surfaces for a multivariable calculus class. I wrote about it on my blog and included a link to my GitHub page with the code. divisbyzero.com/2026/02/01/3...

“If you see something, shovel something.” I shoveled out crosswalks, instead of complaining. If your neighborhood is also stuck in “snowcrete,” please take the #IceBreakUpChallenge: clear a sidewalk, post a photo. Use social media to incent civic behavior. If you like this idea, pass it on. 🪏 🧊💪 🇺🇸

I want to learn how to make stained glass like that!

Looking back at the snowflake designs created in January! #21CenturyPB #PatternBlocks #CuisenaireRods #iTeachMath