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Theorem set.eq_singleton_iff_nonempty_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_nonempty_unique_memView on Github →
2021-01-04 05:36
src/data/set/basic.lean
feat(data/*, order/*) supporting lemmas for characterising well-founded complete lattices (#5446)
Added set.eq_singleton_iff_nonempty_unique_memView on Github →