Lean

FwPython, Part 1: Setting the Stage

FwPython is a compact, Python-like object-oriented language formalized in Lean 4, built to put controlled pressure on the parts of Python typing that type checkers actually have to reason about. This

Formalization of Polynomial Functors in Lean 4

Event URL : SMS Spring Meeting on Formalization and Proof Assistants Polynomial functors are one of the most useful tools in category theory. They have wide-ranging applications across functional pro

Who Watches the Provers? — Leonardo de Moura

This webpage discusses the importance of having multiple independent proof checkers (also called "kernels") to verify the correctness of proofs generated by automated theorem provers like Lean. The au

A User’s Guide to Category Theory in Lean

At the most basic level, a category is a collection of objects and morphisms (arrows) between them, satisfying certain axioms. Categories may appear as categories of mathematical structures and the tr

SLUG (Stockholm Lean User Group)

A reading group run by Yaël Dillies and me, where we discuss different aspects of interactive theorem proving, programming, and metaprogramming in Lean. Everyone is welcome to join! More experienced

IgesDF promove treinamento Lean para eficiência na saúde

Lean Institute Brasil debate novos espaços para a gestão em saúde

Lean Startup: caminho para uma gestão eficiente