Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
f1f45cc2b7
For example, before this commit, structural_rec would not support the
function to_nat defined below.
```
set_option new_elaborator true
inductive foo : bool → Type
| Z : foo ff
| O : foo ff → foo tt
| E : foo tt → foo ff
definition to_nat : ∀ {b}, foo b → nat
| .ff Z := 0
| .tt (O n) := to_nat n + 1
| .ff (E n) := to_nat n + 1
```
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| doc | ||
| extras | ||
| hott | ||
| images | ||
| library | ||
| script | ||
| src | ||
| tests | ||
| tmp | ||
| .gitignore | ||
| .travis.osx.yml | ||
| .travis.windows.yml | ||
| .travis.yml | ||
| LICENSE | ||
| README.md | ||
| License | Windows | Ubuntu | OS X | Builds/Tests |
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About
- Homepage
- Theorem Proving in Lean: HTML, PDF
- Authors
- Standard Library
- HoTT Library
- Short Tutorial
- To Do list
Requirements
- C++11 compatible compiler: g++ (version >= 4.8.1), or clang++ (version >= 3.3)
- CMake
- GMP (GNU multiprecision library)
- MPFR (GNU MPFR Library)
- Lua 5.2 or 5.1, or LuaJIT 2.0
- (optional) gperftools
- (optional) Boost (version >= 1.54), we can build Lean using boost::thread instead of std::thread. When using Boost, Lean can modify the thread stack size.
Installing required packages at
Windows
Linux
OS X
Build Instructions
Miscellaneous
- Testing and Code Coverage
- Building Doxygen Documentation:
doxygen src/Doxyfile - Coding Style
- Library Style Conventions
- Git Commit Conventions
- Automatic Builds
- Syntax Highlight Lean Code in LaTeX