Mathlib v3 is deprecated. Go to Mathlib v4

Theorem function.surjective.of_comp_iff'

Modification history

2021-12-10 21:59
src/logic/function/basic.lean
feat(logic/function/basic): surjective function is an epimorphism (#10691) …
Modified function.surjective.of_comp_iff'View on Github →
2021-02-20 17:42
src/logic/function/basic.lean
feat(data/equiv/basic): injective iff injective after composing with equiv (#6283)
Added function.surjective.of_comp_iff'View on Github →