Theorem QuotientGroup.preimage_image_mk_eq_iUnion_image

Modification history

2023-06-28 10:21
Mathlib/GroupTheory/Coset.lean
feat(Topology/Algebra/Group/Basic): product of compact set and closed set is closed (#5471) …
Added QuotientGroup.preimage_image_mk_eq_iUnion_imageView on Github →