Come join me this Sunday to raise money to build a better Minneapolis!

Recommend @theharvardcrimson.bsky.social coverage of guy who is now dean at Harvard public health school, paid $150k when Columbia prof as "expert witness" supporting Tylenol/autism plaintiffs. (Judge tossed the case, and his testimony.) www.thecrimson.com/article/2025...

Nicely produced clip by Matt Wein and Marylee Williams about our recent dice design project at @scsatcmu.bsky.social and @adobe.com youtube.com/shorts/jD0ag... 🎲 🎥 🐉 🪙

I have had friends on both sides of this conflict since 1967. Finding an organization working for peace and a two state solution from both sides helps me feel hope.

And we're not stopping anytime soon. 🔗: thehill.com/regulation/c...

In #MathsToday we continued our study of logic by simulating digital circuits, making connections between mathematics and computing. "It totally works! It actually works!" #mtbos #ITeachMath

When are we A) going to stop giving them anthropomorphic terms for their outputs B) going to stop prompting them for lazy journalism C) going to convince the media their complicity here has to end: please start actually being critical of the whole AI industry futurism.com/artificial-i...

Side note, among the things covered in here: There's a lot of "eww evangelicals" talk about the Rapture stuff today, but did you know the concept's origin is even more concerning? That's right. It was invented by an English man

Shapes are numbers too! In lieu of alt text - Left - child building a Mondrian inspired picture using primary color rectangular blocks Right - child pasting concentric circles of colored construction paper onto the branch ends of pictures of trees to make a Kandinsky inspired construction.

1. Novel Gravity and Velocity Based Time Dilation Methodology for Real Time Bitcoin Payment Processing 2... the Coolest Part in My Room is Using the Heat Equation 3...my dad's Airstream trailer goes faster with dints and that we shouldn't be grounded for hitting it with a baseball...

What is the probability that 4 points chosen uniformly at random on surface of a sphere form a tetrahedron whose four faces are each acute? Asked on MathOverflow (mathoverflow.net/q/498296/6094) with evidence that the answer is 1/12. But not yet resolved. #MathSky #Mathematics #Geometry #Probability

Greens and cornbread and bacon. Works for me. I think being a nice person in general helps too.

In #MathsToday, we wrote solutions to 4x4 Sudoku puzzles as logical expressions. Thanks to @mathequalslove.bsky.social for the source of 4x4 Sudoku puzzles! #ITeachMath #mtbos

Voici les lauréats du célèbre concours de photographie marine "Ocean Photographer of the Year" 2025. Catégories, gagnants, description des photos lauréates, tout est dans ce fil, à dérouler ci-dessous. ⬇️⬇️⬇️ 1/n

Starbucks going full in on the "you should smile more honey" theory of business operations. #starbucks #ffs I rarely get coffee at Starbucks because I don't like their labor practices. Now I like it even less. www.wsj.com/business/hos...

Not a short read but so worth it. Gist - "...the single most important reason why people grossly overestimate the proportion of the population that is transgender has absolutely nothing to do with bigotry.. It looks like that because the correct answer is so small. That’s it."

Starting at 16:02 a very nice explanation of the jpeg and wavelets by my friend and Mathemalchemy(link in comments) cofounder Ingrid Daubechies www.pbs.org/video/innova...

ok, best found object installations, go I particularly like this one www.icaboston.org/art/cornelia...

In the old days, you'd occasionally run into somebody totally normal who had one utterly insane belief, like a co-worker who just causally says he thinks the sun is alive. Social media is like if we extracted all of those individual bits of madness, cooked them into a stew and ate it for every meal.

Pumpkin and cat from watercolor class at Brackett Park. 90 minutes - paint a complete picture with advice and encouragement from @chanci.art #halloween #pumpkin #cats

Tell me what’s wrong with this picture #mathsky

What we drinking tonight? Me - whiskey, amaro, vermouth. By my pal April at Kahluna You - ?

:)

Today we're proud to highlight the experience of one of our members, Dr. Mei Yin. Please join AWM — or renew your membership — today so that we can continue to offer programs that advance the careers of women like Dr. Yin. Join or renew by Sep 30: 🔗 awm-math.org/membership #AWM #WomenInMath

La réponse de la communauté scientifique aux positions climatosceptiques et hyper-industrielles de l'administration Trump : www.nytimes.com/2025/09/17/c...

Last night’s aurora. Straight overhead, one streak across the sky. About 12:30 am on 9/17/25 It feels like this was the first clear night since it got dark this fall.

I did not know Calder was such a prolific painter! ideelart.com/blogs/magazi...

Protoplanetary disk of WISPIT 2, 437 light years from Earth.

So I made a video on this week's problem too. youtu.be/zYsNc0oJKo8 #math #maths #ProblemSolving #iteachmath #mathsky

We hear music as a blend of notes, but hidden inside is math doing the same work our ears do. In the 1800s, Joseph Fourier showed that any complex signal could be broken into simple waves. Then Fourier transform reshaped math, physics, and even our digital world. 🔗

Had to have a look at when and where. For a shapes type math guy who was in the Navy and 'sub adjacent" often. Never thought about the sub-submarine thing much. en.m.wikipedia.org/wiki/Submari...

Love it! Great arguments!

Très intéressant petit article de blog écrit par Maria Vincent @themariavincent.bsky.social , doctorante à l'Institut d'astronomie de l'Université d'Hawaï à Manoa. Biais, partage d'informations, inclusion, humilité, elle nous raconte ce que la lecture du Petit Prince de St Exupéry lui évoque :

Fractal broccoli, sautéed with zucchini and red peppers.

I love that more and more mathematics museums are opening lately. (I want a museums/time graph to prove that intuition.) Just imagine all the math circles and festivals these museums bring to their regions. And the conferences and the teacher workshops. YAY! 🎉 #iTeachMath #MathSky

I learned number theory from this book!

cascading kittens sweater

New tiling results on the arXiv, one of which says that determining whether or not two connected polycubes can together tile R^3 is undecidable (Cor. 5.5). A polycube is an object built by gluing cubes face-to-face. (Unrelated fig.) arxiv.org/abs/2509.07906 #MathSky #Mathematics #Geometry #Tiling

Pattern block play! #21CenturyPB #iTeachMath

Good article for those considering a public display of "I'm still figuring this thing out."

Not sure this colorful tiling scheme reveals anything about why the "X" is excluded from tiling a 5x4 rectangle with 4 different pentominoes but it is very pretty to look at.

My talk today for #Baxter2025 at 11:30 AEST (UTC+10) 👇🏼

Fun opportunity for advanced high school students/college students: The math story competition invites short digital stories connecting a mathematical idea to the real world. It invites students to be creative, develop their curiosity and have fun with mathematics. mathstory.org

Mathematician Marjorie Lee Browne, whose work focused on linear algebra, topology, and the properties of classical groups, was born #OTD in 1914. She was one of the first Black women to earn a PhD in mathematics from a US university – the University of Michigan.👩‍🔬 🧪 🧮

And!!! - they are making Allison Sleds! en.wikipedia.org/wiki/Sled_kite

Reminds me of all of the physics lab equipment gathering dust in my HS circa 1973. We landed on the moon and Boeing was laying off engineers so money to maintain it and train teachers to use it was gone.

I hope I can become a software engineer and my future coworkers appreciate my naming conventions.

🔥 “Is it true that car manufacturers will no longer be required to include seat belts free of charge in future lineups? Yes, but car companies have assured me that they’re working tirelessly on a subscription-based model that will allow users access to the seat belt already included…”

A propos of a secret project, I am compelled to re-share some thoughts about probability and other hard things to learn. talkingmathwithkids.com/blog/same-id...