Any lattice theory experts want to help me do this, or let me know if it's already been done (or wrong)? 🧮

lil’ guy nibblin’

Every totally real cubic field hides a closed orbit in the space of 3D lattices. Here's one, glowing — the lattice stretches along its three real embeddings, then snaps back, forming a closed geodesic of period 1. Play with it 👉 kyleormsby.github.io/lattice-flow/ 🧮 1/4

Would I enjoy persistence-hunting medium-sized game? Yes. Would I enjoy being hunted by a saber tooth tigers? No.

Installing Macaulay2 via homebrew and my laptop now sounds like it's about to takeoff. Wish me luck 🫡

if a maximally neurotypical person was asked ⌜what do x and y have in common?⌝, for any x and y, they would respond ⌜x and y both satisfy the predicate F, such that F is true of all and only objects in possible worlds that are exactly like the actual world in every way⌝

🚨pine martens ramblin’ 🚨

Check out this gyroelongated triangular bicupola (J₄₄)!

Orthographically, they're both contractible.

Artist and #InfiniteSums math ambassador Jiabao Li talks about transforming abstract #math into climbable sculptures and how friendship leads to great collaborations: https://bit.ly/4uFKvyQ #art

Were I to found a running club it would be called Western Oregon Running Klub so its members could say things like “Sorry honey, I have WORK.”

Analytic philosophy implies the existence of smooth, piecewise linear, and topological philosophy.

Seven-mile run at Smith Rock with my physics colleague on my way to a Board of Trustees retreat — I ❤️ Reed.

FEUERWEHR

Borromean carabiners and Borromean paper clips.

"I can fix him" -- g ∈ Stab(x)

I think we can all agree that any day in which you get to think about SL₃(ℤ)\SL₃(ℝ) is a good day.

I went to a refugee relocation facility in San Benito, Texas, that is being used to isolate pregnant children, to conduct oversight and check on their welfare—but when I went, I wasn’t allowed to see a single child. What is the federal government hiding?

Fantastic and important reporting by Siobhan Roberts in the NYT. 🧮 Gift link: www.nytimes.com/2026/06/02/s...

The Leiden Declaration site (leidendeclaration.ai) is down presently, but you can still read it on Zenodo (zenodo.org/records/2030...). 🧮

Another TWIN PEAKS poster from Ghana! (David Lynch)

Today's song: A Flock of Seagulls — Iran (So Far Away From a Deal)

Imagine the embarrassment of not having your grant cancelled because it was deemed to “demonstrably advance the president’s policy priorities.” Gift link: www.nytimes.com/2026/06/02/u...

Join me and Meech Boakye at the Portland Institute of Contemporary Art on June 10, 6-8pm, for a topological printmaking workshop! www.pica.org/events/meand... This work is supported by the @simonsfoundation.org through their Infinite Sums and Open Interval programs.

Trying to weasel out of tomorrow's 5k time trial in the most endurance athlete fashion possible.

This building attempts to answer the question "What if it feels real nice to be assimilated by the Borg?"

Inventing a new kind of crank who is not an ultrafinitist — they believe in infinity — but insists that an ordinal exists iff you've personally verified a recursive construction of it and thus insists the Church-Kleene ordinal isn't real.

I need The Atlantic to publish thought pieces on the phrases "changed my brain chemistry" and "understood the assignment" so that both can be retired.

In case you saw this and reacted without reading the piece: it’s a bad faith framing based on a quotation pulled out of context.

Organ Pipe Cactus commissioned me to design this poster to celebrate their new dark sky status. www.spacearttravelbureau.com #art #spaceart #astronomy

Dear @trimet.org, I would like to lodge a complaint: I took the FX2 bus from SE Portland to PSU and it was so fast I almost missed my stop. 😅

What the world needs right now is an HBO prestige mini-series about the life of Mary Everest Boole. en.wikipedia.org/wiki/Mary_Ev...

Mom, the abyss is staring back into me again!

NEW: A lot of bad has happened to American science over the last year but nothing comes even close to what’s about to happen if we don’t speak out in opposition to the OMB rule changes and I hope @aaas-socsci.bsky.social @apsphysics.bsky.social and others will launch public campaigns about this. 🧪🔭⚛️

As I was saying. www.yahoo.com/news/politic...

Algebraic geometers think of the complex roots of a homogeneous polynomial in 3 variables as a "curve", but it's really a surface (real dimension 2) in the (real) 4-dimensional "complex projective plane". How can we see such an object? Here's an attempt: kyleormsby.github.io/dual-view-cu... 1/ 🧮

Jiabao and Fumiko are making some really cool art/math. I can't wait to experience their playground! #MathArt 🧮

Mathematics is the sacred transmogrification of the skeletal debris of ancient microscopic marine organisms (chalk) into pure thought.

Happening tomorrow and Sunday!

By 2030 you’ll be sanding down that “statement” look, A fad dressed up as classic, just another Pinterest hook.

I had to create a new keyboard layout because the e key on my keyboard is broken

Many are saying

If you need me, I’ll be in my thinking nest.

Terrible conjugation from a newspaper of record. Corrected title: Ich Mag, Er Mag, Du Magst, Wir Alle Mögen

some mathematicians think we should eschew nonconstructive axioms that assert the existence of an object without an explicit construction. what they fail to consider, however, is that with climate change bringing hotter summers to more areas, we need AC to get by.

Call me Ishmael. Some years ago—never mind how long precisely—having little to no money in my crypto x FTX wallet, and nothing particular to interest me on twitch, I thought I would discord surf a little and see the wavy part of the chat.

Anyone else up crafting jokes at the intersection of 19th century nonsense rhymes and the theory of uniform polytopes?

Aka the great disprismatohexacosihecatonicosachoron(!) — one of the runcinated 120-cells. I added it to the library at kyleormsby.github.io/nets/ but — fair warning — your laptop might find its 14,400 vertices and 2,640 cells to be a heavy lift.

Make a binary tree listing all matrix products of 1 0 and 1 1 1 1 0 1 If you multiply 1 1 on the left by all these matrices, you get the Calkin-Wilf tree. If you multiply 1 1 on the right by these matrices, you get the Stern-Brocot tree! math.colorado.edu/~kstange/pap...

As a special additional treat, here are all 261 nets of the hypercube: kyleormsby.github.io/nets/tessera... 🧮