Mastodawn

In the mountains, I love exploring nature and climbing any little hidden corner.

My academic interests include mathematics ( #mathematics) and mathematical logic ( #mathematicallogic #logic), particularly model theory ( #modeltheory), category theory ( #categorytheory), higher-order logic and metalogic ( #metalogic), as well as the philosophy of mathematics and logic ( #philosophyofmathematics #philosophyoflogic), epistemology and ontology of them.

#introduction

José A. Alonso 2d ago

Readings shared April 4, 2026. https://jaalonso.github.io/vestigium/posts/2026/04/04-readings_shared_04-04-26 #AI #AI4Math #ATP #Agda #AlphaProof #Autoformalization #CategoryTheory #CoqProver #FunctionalProgramming #ITP #IsabelleHOL #LLMs #LambdaCalculus #LeanProver #Lisp #Logic #LogicProgramming #LLMs #Math #Physics #Programming #Prolog #Racket #RocqProver #Vampire

Readings shared April 4, 2026

The readings shared in Bluesky on 4 April 2026 are: Why Lean?. ~ Leonardo de Moura. #LeanProver #ITP A formalization of the Gelfond-Schneider theorem. ~ Michail Karatarakis, Freek Wiedijk. #LeanProve

Vestigium

José A. Alonso 3d ago

Category theory illustrated: Types. ~ Jencel Panic. https://abuseofnotation.github.io/category-theory-illustrated/06_type/ #CategoryTheory #Math

Category Theory Illustrated - Types

Hacker News 4d ago

What Category Theory Teaches Us About DataFrames

https://mchav.github.io/what-category-theory-teaches-us-about-dataframes/

#HackerNews #CategoryTheory #DataFrames #DataScience #Programming #HackerNews

What Category Theory Teaches Us About DataFrames

Every dataframe library ships with hundreds of operations. pandas alone has over 200 methods on a DataFrame. Is pivot different from melt? Is apply different from map? What about transform, agg, applymap, pipe? Some of these seem like the same operation wearing different hats. Others seem genuinely distinct. Without a framework for telling them apart, you end up memorizing APIs instead of understanding structure.

Tom de Jong Mar 31

Thanks to our speakers and @Stiephen all the slides for PSSL 112 are now available on the PSSL website! https://sites.google.com/view/pssl112/program

#CategoryTheory #Logic

Jencel Panic Mar 30

Published a new chapter of #categorytheoryillustrated - Types

https://abuseofnotation.github.io/category-theory-illustrated/06_type/

#categorytheory #mathematics #haskell

José A. Alonso Mar 30

Readings shared March 29, 2026. https://jaalonso.github.io/vestigium/posts/2026/03/30-readings_shared_02-29-26 #AI #AI4Math #CategoryTheory #ITP #LeanProver #Logic #Math #Programming

Readings shared March 29, 2026

The readings shared in Bluesky on 29 March 2026 are: Embracing AI and formalization: Experimenting with tomorrow’s mathematical tools. ~ Jarod Alper. #AI4Math #LeanProver #ITP #Math On the paucity of

Vestigium

José A. Alonso Mar 29

Formally verifying digital circuits with category theory in Lean. ~ Matt Hunzinger. https://matt.hunzinger.me/2026/03/28/circuits.html #LeanProver #ITP #CategoryTheory