Saturn in Near UV and Blue - From Judy Schmidt (geckzilla.bsky.social) - https://flic.kr/p/2fMx5oT

OK but this is too exciting to wait on sharing: my book! It has a cover! (Coming in November from Fortress Press, pre-orders will be available sooooooon)

when you're going for Beethoven's 5th but you accidentally end up with Sk8er Boi

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

Next time somebody tries to get me to justify the existence of the humanities, I’ll just point out how for the past two Super Bowls we’ve all jumped online and engaged in collective semiotics and hermeneutics of the half-time show as text.

My daughter stated very definitively that this playground toy has two holes. Then she pointed to them and counted them. Checkmate, topologists.

Ok but I’m going to share this story alongside my newest favorite image from Tumblr.

#Superbowl both ways: Lucanian Owl Skyphos, first quarter of 4th century B.C., from Apulia. www.getty.edu/art/collecti...

Ok I won’t be watching the Super Bowl, but if I want to get with the times, is there a Bad Bunny album I should listen to?

I am so envious of Toad's to-do list

Huh. This says it’s just me, but it’s more than one device for me. Laptop and phone both.

This is random, but is the AMS website down? www.ams.org

They should have all the Doctors on The Muppet Show. Possibly at once. With Julius Strangepork appearing as the 67th Doctor or something.

Ok my question for #mathsky is: what kind of curve interpolation was used to draw the red line?

I made a whole guide about finding free-to-use, openly licensed and public domain images! pressbooks.cuny.edu/studentguide...

Guess what - all those cool space photos from NASA are public domain! (Can't use NASA logos and there are other restrictions on images with recognizable people in them, but check it out!) images.nasa.gov

Public domain clip art, y'all. openclipart.org

This is the kind of link you click and immediately discover some life-changing piece of art.

👇

That’s the co-Christ. The Antichrist turns antiwater into antiwine.

I am taking a strange parental pleasure in the thought of showing the new The Muppet Show to my kids and saying not, hey here’s a fun thing you might like, but instead, hey here’s a new episode of a thing you already like! (Show your kids classic Muppets!)

Look, we can do this the easy way (0 ∈ ℕ) or the hard way (universal free ice cream). Or both.

Very useful phrase

Can they make a mess of things? Yeah. But if the goal is to resist, it's important to first be clear about what they have the capacity to do, and how they plan to do it. "ICE will be at all the polling places" is literally impossible. Even adding in CBP. It leads to doomerism and poor planning.

On a more positive note, here is an example of the kind of professional math blog post that we need in these times. I wish @joinmaa.bsky.social and @amermathsoc.bsky.social would take note and feature writing like this in their publications.

Amazing logistics for the 3D printed whistles

The Hunt for Red October is apparently the most cliche answer, so I’ll mention one I haven’t seen yet in the thread: Men in Black

Something silly I made for a message about E Day sent on Groundhog Day

Written version available here: open.substack.com/pub/louisear...

Week 1 - Black History Month 2026 1. You may have seen this image of Black men voting during Reconstruction, and assumed it is a depiction of voting after the passage of the 15th Amendment (which outlaws denying the right to vote based on race).

I still enjoy a PB&J. But it holds another meaning for me now—touched on in this essay—as I make PB&J sandwiches every other Saturday night to distribute in lunches to folks on the street. Relatively easy and quick, has both protein and sweet, keeps well for transport.

Agnes Giberne's The Story of the Sun, Moon, and Stars (1898) transports us to the most remote astral bodies, but also quickens every reader’s lost seven-year-old sensibility that the universe was made to be brought within one’s humble yet unbounded reach: publicdomainreview.org/collection/s...

Via @publicdomainrev.bsky.social on Tumblr: Albrecht Dürer’s Pillow Studies (1493) publicdomainreview.org/collection/d...

During a faculty debate this morning on the topic of using AI to help grade assignments, I pointed out that students should have the right to opt out of having their work uploaded to an LLM (or any external system, like Turnitin). Does anyone know of any cases or laws or policies that support this?

During a faculty debate this morning on the topic of using AI to help grade assignments, I pointed out that students should have the right to opt out of having their work uploaded to an LLM (or any external system, like Turnitin). Does anyone know of any cases or laws or policies that support this?

No no, you should keep it forever, as is traditional!

En effet ni la délivrance de visas par le pays hôte, ni sa sécurité intérieure alors qu'y est régulièrement évoquée la loi martiale, ne semblent garanties. (2/3)

Is this the first organization to publicly declare they are not going to the ICM because of the political situation? How broad do we think the boycott will extend?

Thinking of those photos of grandmas at rallies holding signs that said “Mass Deportations Now!” Minneapolis reveals the fantasy that they were endorsing. I wonder if they’re proud.

Talking Weather Talking News 🤝 Ice must always be considered dangerous if it is on the streets. If complete Ice removal measures are not taken, Ice may cause deadly conditions.

I wrote about two of my favorite infinite series problems to give to students. They're fun to do and have some cool things to think about and that's become increasingly important to me. www.peter-keep.com/2026-01-21-s...

Incredibly emotional to hear my poem has been turned into a song of resistance and is being sung in Minneapolis right now. Please do not give up.

I wrote this poem as an homage to Baldwin and to hear it being sung across the world or read in protests has been my own guiding light of hope.

“For if you love those who love you, what reward do you have? And if you greet only your brothers and sisters, what more are you doing than others?”

This year, preparing for the LA Homeless Count includes knowing what to do if volunteers encounter ICE agents during the Count.

if your pedagogical philosophy is “actually, learning, thinking, and being intellectually challenged is fun and can be life-giving,” grades are like a pebble in your shoe.

The short term goal is “no government funding until the ICE funding is reduced.” The medium term goal is “abolish ICE.” The long term goal is Migration With Dignity: a framework for immigration based on welcoming and celebrating new neighbors and meeting their needs.

‘SINNERS’ has won Best Original Score at the Golden Globes See the full winners list: bit.ly/GlobeWins26

“Golden” from ‘KPOP DEMON HUNTERS’ has won Best Original Song at the Golden Globes See the full winners list: bit.ly/GlobeWins26

I think about this quote from the Luddite movement all the time