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Theorem equiv.eq_image_iff_symm_image_eq

Modification history

2021-10-06 15:46
src/data/equiv/basic.lean
refactor(data/equiv): split out `./set` from `./basic` (#9560) …
Modified equiv.eq_image_iff_symm_image_eqView on Github →
2021-04-01 18:49
src/data/equiv/basic.lean
feat(group_theory/order_of_element): generalised to add_order_of (#6770) …
Added equiv.eq_image_iff_symm_image_eqView on Github →