Lean Kernel Arena / tutorial/112_reflOccInIndex

Test "tutorial/112_reflOccInIndex"

Expected: ✋ reject · Size: 3.9 KB · Lines: 66 · lean4export: 3.1.0 · Lean: 4.29.1 · 📄 Declaration · 🔗 Source

Rejection: recursive occurrence in index position, behind a further arrow.

We build an indexed inductive I : Type → Type with a constructor argument Nat → I (I α), so the recursive occurrence appears as an index argument.

Checker Result ⏱️ 🧠
nanoda 2 ms 2.9 MB
nanobruijn 2 ms 3.1 MB
official-nightly 31 ms 57.0 MB
official 31 ms 67.7 MB
official-v4.28.0 38 ms 71.8 MB
lean4lean 57 ms 86.8 MB
mini 38 ms 70.9 MB
vow-lean-kernel 72 ms 7.8 MB
evmlean 623 ms 122.7 MB
always-decline 🚫 1 ms 2.9 MB
sokonanoda 2 ms 2.9 MB
rpylean 2 ms 7.9 MB
still-nanoda 2 ms 3.0 MB
always-reject 1 ms 2.9 MB
parse-only 👍 37 ms 71.1 MB
always-accept 👍 1 ms 2.9 MB