Riemannian geometry, formalized in Lean 4 on top of Mathlib.
Add to your lakefile.lean:
require OpenGALib from git "https://github.com/MathNetwork/OpenGA.git" @ "main"
Then:
lake exe cache get
lake build
Requires Mathlib at the SHA pinned in lake-manifest.json.
Apache 2.0 — see LICENSE.