Matteo Capucci

@mattecapu.bsky.social

496 Followers 263 Following

🇮🇹, amateur professional poster and professional amateur mathematician (general abstract nonsensology applied to systems theory & cybernetics), aspiring psycohistorian. shitposting isn't endorsement. You can't find me here, I'm on @mc@mathstodon.xyz

Poem There is an interesting stanza from a song of Léo Ferré: Et que les globules figurent Une mathématique bleue, Sur cette mer jamais étale D’où me remonte peu à peu Cette mémoire des étoiles. — (Léo Ferré, La mémoire et la mer) He also mentions geometry and ‘théorème’ elsewhere in the song.
Let Lin ←−− be the ∞-category whose objects are the presheaf categories SS with S locally finite, and whose morphisms are the continuous linear functors: A linear functor F : ST → SS is called continuous when for all ε ⊂ S there exists δ ⊂ T and a factorisation ST // F Sδ Fδ SS // Sε. Here we quantify over finite groupoids ε and δ with full inclusions into S and T ; the horizontal maps are the projections of the canonical pro-structures.
117€ for a technical ebook
two pullback squares, side by side
A tweet showing a screenshot of DeepSeek refusing to answer a question about Tien An Men square
Holder's inequality, aka graded duoidality of p-sums over multiplication on the reals
I give some calculations (in a bit of a rush - I hope they are right) but do not take the analysis very far.
I am once again asking for interesting/cool/accounts to follow
The lecture quickly descended into pandemonium. With little explanation, Apéry presented equation after equation, some involving impossible operations like dividing by zero. When asked where his formulas came from, he claimed, “They grow in my garden.” Mathematicians greeted his assertions with hoots of laughter, called out to friends across the room, and threw paper airplanes.
a semiology book, a cup of coffee, and lots of sunlight
Riehl and Verity's 'Oops! All isofibrations' definition of oo-cosmos