Mathlib v3 is deprecated. Go to Mathlib v4

Theorem subsingleton.mem_iff_nonempty

Modification history

2021-09-08 14:01

src/data/set/basic.lean

feat(data/(fin)set/basic): `image` and `mem` lemmas (#9031) …

Added subsingleton.mem_iff_nonempty View on Github →