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Theorem set.eq_singleton_iff_unique_mem

Modification history

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) …
Modified set.eq_singleton_iff_unique_memView on Github →
2021-01-27 18:19
src/data/set/basic.lean
refactor(data/set/basic): simpler proofs (#5920) …
Modified set.eq_singleton_iff_unique_memView on Github →
2020-10-04 11:10
src/data/set/basic.lean
feat(data/set/basic): eq_singleton_iff_unique_mem (#4387) …
Added set.eq_singleton_iff_unique_memView on Github →