Theorem Monoid.CoprodI.Word.fstIdx_ne_iff

Modification history

2023-07-31 14:06
Mathlib/GroupTheory/CoprodI.lean
refactor: rename `FreeProduct` to `Monoid.CoprodI` (#6055)
Added Monoid.CoprodI.Word.fstIdx_ne_iffView on Github →