Lean 4 fork for HoTT-compatible kernel extensions (Path types, transport, HITs). Maintained against upstream leanprover/lean4.
84188c5aa1
@johoelzl We now produce a better message for your example: inductive R : ℕ → Prop | pos : ∀p n, R (p + n) lemma R_id : ∀n, R n → R n | (.p + .n) (R.pos p n) := R.pos p n The new error is: file.lean:5:2: error: invalid function application in pattern, it cannot be reduced to a constructor (possible solution, mark term as inaccessible using '.( )') .p + .n |
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| LICENSE | ||
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About
- Homepage
- Theorem Proving in Lean
- Standard Library
- Emacs Mode
- For HoTT mode, please use Lean2.
Requirements
- C++11 compatible compiler
- CMake
- GMP (GNU multiprecision library)
- MPFR (GNU MPFR Library)
- (optional) gperftools (There is currently an issue with gperftools on macOS Sierra. For now, either don't install it, or pass the flag
-DTCMALLOC=OFFto CMake when building to not use it.)
Installing required packages at
Windows
Linux
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Build Instructions
Miscellaneous
- Building Doxygen Documentation:
doxygen src/Doxyfile - Coding Style
- Library Style Conventions
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