Lean Kernel Arena / tutorial/106_reflOccInIndex

Test "tutorial/106_reflOccInIndex"

Expected: ✋ reject · Size: 4.0 KB · Lines: 66 · lean4export: 3.1.0 · Lean: 4.27.0-rc1 · 📄 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 2.8 MB
official-nightly 33 ms 57.1 MB
official 33 ms 65.8 MB
official-v4.28.0 39 ms 70.9 MB
nanobruijn 12 ms 35.2 MB
lean4lean 66 ms 90.3 MB
mini 40 ms 70.3 MB
always-decline 🚫 1 ms 2.8 MB
always-reject 1 ms 2.8 MB
rpylean 2 ms 6.4 MB
parse-only 👍 39 ms 69.9 MB
always-accept 👍 1 ms 2.8 MB