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Theorem function.injective.subsingleton_image_iff

Modification history

2022-12-07 20:30
src/data/set/basic.lean
refactor(data/set/basic): move image, preimage, and range to a new file (#17842) …
Modified function.injective.subsingleton_image_iffView on Github →
2021-03-16 21:43
src/data/set/basic.lean
feat(topology/separation): `(closure s).subsingleton ↔ s.subsingleton` (#6707) …
Added function.injective.subsingleton_image_iffView on Github →