The Lea Ecosystem An agent backbone for mathematician-led formalization. 2026-08-11T12:00:00Z https://vida-nyu.github.io/Lea/ Introducing Lea: formalization that keeps the mathematician in the loop https://vida-nyu.github.io/Lea/blog/introducing-lea/ 2026-08-11T12:00:00Z The Lea team Lea is an open-source Lean 4 agent backbone built on one premise — the mathematician steers the decomposition, intervenes mid-proof, and reviews each claim as it is established.