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Theorem set.exists_eq_singleton_iff_nonempty_unique_mem

Modification history

2022-02-21 11:38
src/data/set/basic.lean
chore(data/set/basic): add a few lemmas and a `@[simp]` attribute (#12176) …
Deleted set.exists_eq_singleton_iff_nonempty_unique_memView on Github →
2021-11-10 02:49
src/data/set/basic.lean
feat(group_theory/complement): iff-lemmas for when bottom and top subgroups are complementary (#10143) …
Added set.exists_eq_singleton_iff_nonempty_unique_memView on Github →