max/lean4-htt
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 2
Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
39260 commits 1 branch 0 tags 5.3 GiB
Find a file
Elazar Gershuni 90ba5f3f40
feat: add prefix and suffix map injectivity lemmas (#12108) 
This PR adds `prefix_map_iff_of_injective` and
`suffix_map_iff_of_injective` lemmas to Init.Data.List.Nat.Sublist.

These lemmas establish that if a function `f` is injective, then the
prefix and suffix relations are preserved under mapping (e.g., `l₁.map f
<+: l₂.map f ↔ l₁ <+: l₂`). These additions complement the existing
index-based lemmas in this file and allow for simpler structural proofs
without resorting to `take`, `drop`, or manual index manipulation.
2026-01-27 22:54:16 +00:00
.claude doc: document release notes process and add guard check (#12158) 2026-01-26 07:16:01 +00:00
.github fix: use gh release create instead of action-gh-release (#12180) 2026-01-27 05:04:43 +00:00
doc doc: clarify release notes title format requirements (#12182) 2026-01-27 08:08:47 +00:00
images
releases_drafts chore: add release draft for the module system (#11359) 2025-11-26 15:01:07 +00:00
script doc: document release notes process and add guard check (#12158) 2026-01-26 07:16:01 +00:00
src feat: add prefix and suffix map injectivity lemmas (#12108) 2026-01-27 22:54:16 +00:00
stage0 chore: update stage0 2026-01-27 20:33:17 +00:00
tests fix: avoid SIGFPE on x86_64 for ISize division overflow (#12110) 2026-01-27 19:36:07 +00:00
.gitattributes doc: grove: update and add String data (#11551) 2025-12-08 16:49:37 +00:00
.gitignore chore: add .vscode/settings.json to .gitignore (#10795) 2025-10-16 07:08:41 +00:00
.gitpod.Dockerfile chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.gitpod.yml chore: add gitpod configuration (#6382) 2024-12-15 21:38:13 +00:00
.ignore
CMakeLists.txt fix: cadical dynamic dependencies (#11475) 2025-12-02 13:54:26 +00:00
CMakePresets.json chore: CI: enable leak sanitizer again (#11339) 2025-11-27 18:32:35 +00:00
CODEOWNERS chore: make @hargoniX code owner of the compiler (#10732) 2025-10-10 04:43:38 +00:00
CONTRIBUTING.md doc: triage 2024-07-26 18:24:06 +02:00
flake.lock chore: robustify Nix shell (#8141) 2025-04-28 15:08:32 +00:00
flake.nix chore: use lld if available for building core (#10694) 2025-10-08 16:47:30 +00:00
lean-toolchain
lean.code-workspace chore: lean.code-workspace: fix terminal cwd (#10802) 2025-10-16 20:19:12 +00:00
LICENSE
LICENSES feat: ship cadical (#4325) 2024-08-23 09:13:27 +00:00
README.md doc: update URLs that are currently pointing to redirects (#10397) 2025-09-17 15:50:07 +00:00
RELEASES.md chore: updates to release_checklist.md (#7817) 2025-04-04 03:45:36 +00:00

README.md

This is the repository for Lean 4.

About

Installation

See Install Lean.

Contributing

Please read our Contribution Guidelines first.

Building from Source

See Building Lean.