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Lean

software for interactive and automated theorem proving
CreativeWork open_source_software Q6509476
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Lean

Summary

Lean is an open-source software[1]. Lean ranks in the top 2% of open_source_software entities by monthly Wikipedia readership (826 views/month).[2]

Key Facts

  • Lean received the Programming Languages Software Award[3].
  • Lean was influenced by Rocq prover[4].
  • Lean was influenced by Isabelle[5].
  • Lean's instance of is recorded as open-source software[6].
  • Lean's instance of is recorded as proof assistant[7].
  • Lean's instance of is recorded as programming language[8].
  • Lean's logo image is recorded as Lean logo2.svg[9].
  • Lean's developer is recorded as Microsoft Research[10].
  • Lean's developer is recorded as Leonardo de Moura[11].
  • Lean's copyright license is recorded as Apache Software License 2.0[12].
  • Lean's programmed in is recorded as Q15777[13].
  • Lean's programmed in is recorded as Q2407[14].
  • Lean's programmed in is recorded as Lean[15].
  • Lean's designed by is recorded as Leonardo de Moura[16].
  • Lean's operating system is recorded as cross-platform[17].
  • Lean's software version identifier is recorded as 3.0.0[18].
  • Lean's software version identifier is recorded as 3.1.0[19].
  • Lean's software version identifier is recorded as 3.2.0[20].
  • Lean's software version identifier is recorded as 3.3.0[21].
  • Lean's software version identifier is recorded as 3.4.0[22].
  • Lean's software version identifier is recorded as 3.4.1[23].
  • Lean's software version identifier is recorded as 3.4.2[24].
  • Lean's software version identifier is recorded as 4.0.0[25].
  • Lean's software version identifier is recorded as 4.1.0[26].
  • Lean's software version identifier is recorded as 4.2.0[27].

Body

Publication

Lean's publication date is recorded as +2013-00-00T00:00:00Z[28]. Lean's language of work or name is recorded as English[29].

Reception

Lean received the Programming Languages Software Award[3].

Why It Matters

Lean ranks in the top 2% of open_source_software entities by monthly Wikipedia readership (826 views/month).[2] Lean has Wikipedia articles in 14 language editions, a strong signal of global cultural recognition.[30]

Lean has been cited as an influence by F*[31], a programming language[32].

FAQs

What awards did Lean receive?

Honors received include Programming Languages Software Award[3].

Who did Lean influence?

Lean has been cited as an influence by F*[31].

Related Entities

C++ cross-platform F* Lean Leonardo de Moura open-source software programming language Rocq prover

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [6] ↑ . wikidata.org.
  2. [7] ↑ . wikidata.org.
  3. [8] ↑ . lean-lang.org. lean-lang.org. Provenance: wikidata.org.
  4. [9] ↑ . wikidata.org.
  5. [3] ↑ . sigplan.org. Retrieved . sigplan.org. Provenance: wikidata.org.
  6. [10] ↑ . wikidata.org.
  7. [11] ↑ . wikidata.org.
  8. [12] ↑ . wikidata.org.
  9. [13] ↑ . wikidata.org.
  10. [14] ↑ . wikidata.org.
  11. [15] ↑ . wikidata.org.
  12. [16] ↑ . lean-lang.org. Retrieved . lean-lang.org. Provenance: wikidata.org.
  13. [17] ↑ . wikidata.org.
  14. [18] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  15. [19] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  16. [20] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  17. [21] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  18. [22] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  19. [23] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  20. [24] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  21. [25] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  22. [26] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  23. [27] ↑ . github.com. Retrieved . github.com. Provenance: wikidata.org.
  24. [29] ↑ . wikidata.org.
  25. [28] ↑ . wikidata.org.
  26. [4] ↑ . wikidata.org.
  27. [5] ↑ . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [31] ↑ . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [32] ↑ . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [30] ↑ . Wikidata sitelinks. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Lean. Retrieved May 3, 2026, from https://4ort.xyz/entity/lean
MLA “Lean.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/lean.
BibTeX @misc{4ortxyz_lean_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Lean}}, year = {2026}, url = {https://4ort.xyz/entity/lean}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Lean — https://4ort.xyz/entity/lean (retrieved 2026-05-03)

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