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Lean

Software for interactive and automated theorem proving

2013Appeared
4.35.0Latest version
1Languages it influenced

Facts

Appeared
2013
Latest version
4.35.0 (October 12, 2026)
Languages it influenced
1
First release
June 16, 2014
Kind
open-source software, proof assistant
Designed by
Leonardo de Moura
Developer
Microsoft Research, Leonardo de Moura
Influenced by
Rocq prover, Isabelle
Implemented in
C, C++, Lean
Platform
AArch64, x86-64
Operating system
cross-platform
Used for
automated theorem proving
Influences listed
2

Sources: Wikidata (CC0) · Wikidata Q6509476

Influenced · 1

LanguageAppearedParadigmsType systemLanguages it influenced
F*—functional programming, imperative programmingstatic typing, dependent typing, refinement typing, inference typing, strong typing—