Theorem Function.Involutive.image_eq_preimage

Modification history

2025-11-07 10:44
Mathlib/Data/Set/Image.lean
refactor(Logic/Equiv): rename `image_eq_preimage` to `image_symm_eq_preimage`/`image_eq_preimage_symm` (#31130) …
Deleted Function.Involutive.image_eq_preimageView on Github →
2025-07-31 16:18
Mathlib/Data/Set/Image.lean
feat: `f '' s = f ⁻¹' s` for an involution `f` (#27746)
Added Function.Involutive.image_eq_preimageView on Github →