Lean Kernel Arena / tutorial/057_indNegReducible

Test "tutorial/057_indNegReducible"

Expected: ✋ reject · Size: 1.9 KB · Lines: 31 · lean4export: 3.1.0 · Lean: 4.29.1 · 📄 Declaration · 🔗 Source

When checking inductives, we expect the kernel to not reduce the type of the constructor parameters further than head normal form. Recursive occurrences nested inside the head normal form are considered negative occurrences, even if they could be reduced to disappear.

Checker Result ⏱️ 🧠
mathgraph ✋ 1 ms 29.7 MB
sokonanoda ✋ 1 ms 29.7 MB
nanoclo ✋ 1 ms 37.8 MB
con-ron ✋ 1 ms 12.1 MB
lazylean ✋ 1 ms 21.2 MB
nanoda ✋ 0 ms 3.2 MB
nanobruijn ✋ 1 ms 3.4 MB
con-leche ✋ 3 ms 17.2 MB
eink0rn ✋ 1 ms 11.4 MB
ind-models ✋ 58 ms 104.8 MB
official ✋ 27 ms 66.5 MB
lean4lean ✋ 28 ms 97.5 MB
tenet ✋ 118 ms 44.0 MB
nanoclo-fortran ✋ 1 ms 4.1 MB
lean4cobol ✋ 2 ms 13.5 MB
evmlean ✋ 522 ms 130.9 MB
mini ✋ 34 ms 69.6 MB
overfull ✋ 3.4 s 45.7 MB
kiota ✋ 1 ms 6.9 MB
canonical-min 🚫 386 ms 1.1 GB
rpylean ✋ 0 ms 4.3 MB
vow-lean-kernel ✋ 58 ms 8.3 MB
official-v4.28.0 ✋ 34 ms 73.6 MB
still-nanoda ✋ 0 ms 3.3 MB
nyaya ✋ 2 ms 8.9 MB
parse-only 👍 27 ms 65.3 MB