More on the relationship between string diagrams and probabilistic graphical models. New work by Antonio Lorenzin and Fabio Zanasi. arxiv.org/abs/2512.09908

New work by Bart Jacobs, Márk Széles and Dario Stein. arxiv.org/abs/2512.00209

Descent in Probability Theory: the first steps down youtu.be/VG2RTE1R0BY?...

Anyone in Milan tomorrow?

"Independent States Are Orthogonal", a talk at GSI 2025 bridging probability and geometry. youtu.be/mUPJEt3FeiU

New introduction to Categorical Probability for Physicists, by Tomáš Gonda: www.youtube.com/live/eVfFuIG...

Great work by Areeb Shah-Mohammed on partial morphisms in Markov categories. arxiv.org/abs/2509.05094

We should call it 'connecting the DOTS'.

A categorical definition of independence! Here is a recording of the talk I gave at CT 2025, for anyone who might have missed it. youtu.be/ls6zOX8L1eI

New paper out! arxiv.org/abs/2508.01146

The document that started categorical probability, part of secret work from 1962, has reappeared, together with new commentaries of its author, Bill Lawvere. lawverearchives.com/wp-content/u... Thanks to Tobias Fritz and to the Lawvere Archives for the work.

I'm excited to be in Bologna for the week! (If anyone is here and wants to meet, write me an email.)

Me, every time the EU "wants to attract researchers":

We start in 10 minutes!

What are point-free measurable spaces, and what is their quantum equivalent? Great work by Tobias Fritz and Antonio Lorenzin. arxiv.org/abs/2504.13708

We finally have the strong law of large numbers in Markov categories. arxiv.org/abs/2503.21576

To all my UK-based mutual are into 'cybernetics', I very strongly recommend this exhibition in London. www.tate.org.uk/whats-on/tat...

New great work by Dario Stein. arxiv.org/abs/2503.02477

What do Beck-Chevalley monads have to do with conditional probability? arxiv.org/abs/2502.14941

If there was anybody competent in charge in Europe we would be passing emergency legislation this week so that starting next week we poach every scientist from the US who was previously funded by NSF, NIH etc. Oh well, we can dream.

Never forget that you do can do natural gradient descent in Haskell! github.com/alex404/goal

Excited to be in Seattle for the JMM! Besides ACT today and categorical probability on Saturday, which sessions are my fellow category theorists attending?

Here's a lecture at MIT on Markov categories, symmetries, and generative AI by Rob Cornish and myself. youtu.be/ozN4zLEUCgs?... #touchdesigner #streamdiffusion #bananas

New paper on Markov categories, proving Aldous-Hoover categorically, by Leihao Chen, Tobias Fritz, Tomáš Gonda, Andreas Klingler, Antonio Lorenzin. arxiv.org/abs/2411.12840

The smartest thing the EU can do now is release a ton of funding for scientists, and relative visas. And I mean immediately.

My book is out! www.worldscientific.com/worldscibook...