Theorem Ideal.map_comap_eq_self_of_equiv

Modification history

2024-11-04 21:50
Mathlib/RingTheory/Ideal/Maps.lean
refactor(NumberTheory/RamificationInertia): use `Ideal.LiesOver` in some results about `inertiaDeg` (#18270) …
Added Ideal.map_comap_eq_self_of_equivView on Github →