InfoWars implies the existence of DataWars, KnowledgeWars, and WisdomWars

Preview of coming attractions: a visualization of the free group on two generators as a subgroup of SO(3) via the homeomorphism with ℝℙ³. 🧮 #MathArt

Me: [gets cold] My body: We must sacrifice his digits.

I didn’t get to write one but my roommate’s gender studies thesis was on zombie films and I helped extensively with research (managed the by-mail Netflix account and watched at least three zombie flicks a week one summer).

Saw a guy at the ER with a “FAFO” tattoo and — wow — that is walking the walk.

"Is it too much to ask people to understand basic [policy-relevant topic]?" Are you new here?

Today I am teaching the Euclidean algorithm, so I get to show students @rreusser.bsky.social's anthyphaeresisizer! 🧮 #iTeachMath rreusser.github.io/sketches/ant...

Day two of Stravinsky’s Petrushka (1911 version) playing nonstop in my head and I’m not even mad.

This is an incredible handout from Dror Bar-Natan: drorbn.net/AcademicPens...

Mathematicians have built beautiful, snowflake-like codes to untangle some of the trickiest knots. @ericaklarreich.bsky.social reports: www.quantamagazine.org/a-powerful-n...

Despite sounding similar and both having ball forms, matzoh and mozzarella are very different foods.

Kiddo’s 3rd grade class has entered the John Brown discourse.

It is my birthday.

"If you just say Boston Marathon, it conjures up images of the Boston Marathon." Thanks, TV commentator. That really paints a picture.

Here's a second, geared mechanism that transforms between cube and octahedron forms. Full video at youtu.be/T9BNMLFHXUw

Welcome to Portland

I'm also a little salty that topologists were so uncomfortable with the empty set as a face of the simplex that they invented a whole algebraic gadget (augmented chain complexes) to avoid talking about it.

Who else is up triangulating their prisms? kyleormsby.github.io/math342sprin...

If you think about it, anything handmade is digital.

New video, on mechanisms that illustrate the duality between the cube and the octahedron! Here's one of them: a linkage with fabric panels designed by Sabetta Matsumoto. Full video at youtu.be/T9BNMLFHXUw

Which one of you got your congressperson to intercede? I need to give you and your representative a hug.

We did it, Joe!

Snake lemma day in topology. Do I show them the clip? www.youtube.com/watch?v=etbc...

While AI attracts a lot of loud hype and haters, some mathematicians are happily using it to knock off unsolved problems. (I'm not saying anyone is "right" here.) Recently Liam Price prompted GPT-5.4 Pro to prove this conjecture of Erdős: chatgpt.com/share/69dd1c... (1/n)

Happiness is trekking to the break room and discovering that someone just brewed a fresh pot.

Quanta is ready to update E.T. Bell's classic to "Men and LLMs of Mathematics". 🙄 www.quantamagazine.org/the-ai-revol...

After consultation with trusted colleagues, I've decided not to release a recent theorem of mine or its proof. A straightforward corollary would render much of the cryptographic infrastructure behind modern digital life transparent. I will not be circulating the manuscript, sharing it privately, ...

endowed chair for mama's very special boy the atlantic senior professor of phrenology fellowship for dogwhistles in the arts and sciences

If this survey were administered with a labeled picture of Quetzalcoatlus, then views would quickly shift.

Now I have the Gooch ping me my butt location.

Parents got a new puppy. Not sure I can handle this.

Sonya Clark just received a Guggenheim Fellowship! www.gf.org/stories/anno...

You’re telling me the residue field of this iron works has characteristic 2?

A puzzle for #MathSky: I'll give you an integer, and you tell me what I taught today. Here it is: 9680188101680097499940803368598534875039120224550520256994576755856639426217960921548886589841784188388581120523

Trying to imagine what a Pope TOUGH on crime might look like. Gendarmes deputized by every diocese? A new Inquisition? Leo takes a page from Sixtus V's playbook and displays the severed heads of brigands on the Ponte Sant'Angelo?

arxiv.org/abs/2604.09005 /Textiles: from twisted yarn to topology and mechanics/ Elizabeth J. Dresselhaus, Sonia Mahmoudi, Lauren Niu, Samuel Poincloux, Vanessa Sanchez, Michael S. Dimitriyev

Peak Strava use is creating a segment, naming it after yourself, and owning both the CR and Local Legend titles: www.strava.com/segments/175...

Can a semi-autonomous Mars rover be held accountable in a court of law?

The local hardware store refused my demands to open on Sundays, so I will be blockading the local hardware store whenever it’s closed.

Why do UFC fights always take place in an octagon? Has anyone experimented with a nonagon or decagon? Non-regular polygons? What would a fight in a non-convex icosagon look like?

Honestly $16k to shit in a Star Wars droid is a bargain.

Is it more annoying or more sad that there are people who create fake images of current events in order to win Internet Points?

① Prime factorization provides a natural way to embed ℤ⁺, the positive integers, into a countable product of copies of ℕ: you take m∈ℤ⁺ to its sequence of exponents in its prime factorization. The embedding's image consists of sequences that are eventually 0.

What does #MathSky think?

Underappreciated cinematic masterpiece in which cats and librarians are the heroes.

The Mummy (1999) is such a great Passover film.

This is the start of my "Depths of OEIS" series, btw

Terry Tao guest co-authored this SMBC!

Submitting a sculpture to math fest. Here’s a video!