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leanprover/lean4

Lean 4 programming language and theorem prover

leanprover/lean4.json
{
"createdAt": "2018-04-15T02:49:20Z",
"defaultBranch": "master",
"description": "Lean 4 programming language and theorem prover",
"fullName": "leanprover/lean4",
"homepage": "https://lean-lang.org",
"language": "Lean",
"name": "lean4",
"pushedAt": "2025-11-26T02:07:28Z",
"stargazersCount": 6777,
"topics": [
"lean",
"lean4"
],
"updatedAt": "2025-11-26T02:07:31Z",
"url": "https://github.com/leanprover/lean4"
}

This is the repository for Lean 4.

See Install Lean.

Please read our [Contribution Guidelines]!(CONTRIBUTING.md) first.

See [Building Lean]!(doc/make/index.md).