this is a must-read text if you are interested in symbolic dynamics & automata... very approachable, great thinking-problems, and delightful illustrations

Chaos and the double pendulum: the configuration space of the double pendulum is a torus (a circle for each angle coordinate) so we can plot the evolution of such a pendulum in two ways: either as a "real pendulum" in physical space, or as a point in configuration space :)

"Finite groups acting on smooth and symplectic 4-manifolds"

Thanks Notre Dame! That was definitely the largest undergraduate audience I’ve ever had at a talk: you filled the auditorium! What a wonderful evening of mathematics.

Beautiful take on "turning the sphere inside out" by Lu Wang, using our method for conformal Willmore flow: cs.cmu.edu/~kmcrane/Proje… Conformal Willmore flow takes a symmetric "midsurface" to the sphere, without "pinching." Play the movie backwards and you have an eversion…

Wow, beautiful work from Delrieu Laurent on making a curved lamp out of flat, flexible pieces. Sounds like he made use of our "variational surface cutting" algorithm: cs.cmu.edu/~kmcrane/Proje… Always great when you claim an algorithm is useful in a paper—and someone actually uses it!

Saw a counterexample on the way to work today. A tree with a cycle!

Devastated to lose half my colleagues on WIRED's science desk this week due to layoffs. We need more science journalism in the world, not less. WIRED Science won't be the same.

A brief history of converting blood types. 🩸 Blood types were first discovered more than a century ago by this guy, Karl Landsteiner. More recently, biologists have uncovered enzymes that can convert A, B, or AB types to O. But where did the enzymes come from? Why haven't

Spin glasses are fantastically interesting and useful, relating to NP graph problems and lots of cool physics beyond! This blog post seems like a great, discipline-agnostic introduction: lewiscoleblog.com/spin-glass-mod…

Still remember sharing this paper the day it came out with my advisor (we were working on metric learning "gerrymandering" and it seemed relevant). I had just started school. Hard to believe it has already been 10+ years. But that said, two easy test of times two years in a row.

Domestic cats have been recorded eating more than 2000 other species, and the true number of species they eat is probably far greater 👇 newscientist.com/article/240812…

— Barnard Bulletin, New York, November 22, 1938

"How the skin got its sweat". Our new paper just went live. Sweat gland development requires an eccrine dermal niche and couples t... sciencedirect.com/science/articl…

“The waves won’t stop when you leave” This is such a beautiful quote . Life will go on without me.

I gave a little interview for hermathsstory 😊

How I found my dad's master's thesis on a random table at McGill... a short story. Recently one of my friends messaged me this picture. You see, a grad student in the math department left out a bunch of category theory textbooks for other students before she left McGill

This article I wrote entitled, "How can we know what we deserve when toxicity is the norm?" just appeared in the February issue of the AMS Notices. ams.org/journals/notic…

Orbits. Made with #python, #matplotlib and #numpy.

my neighbor told me recently that OK comes from ancient greek όλα καλά "all good"... i did a little research, and it's unbelievable what comes from the ancients... LMAO = Λαμπρός Μύθος Αρχαίας Ὀδύσσειας = "the brilliant tale of the ancient Odyssey" BRB = Βραχύς Ρόδος Βίος = "the