Theorem Algebra.FormallyUnramified.isIdempotentElem_elem

Modification history

2026-10-19 10:12
Mathlib/RingTheory/Unramified/Finite.lean
feat(RingTheory/Unramified/Finite): `elem` is idempotent (#44966) …
Added Algebra.FormallyUnramified.isIdempotentElem_elemView on Github →