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Theorem finset.eq_singleton_or_nontrivial

Modification history

2023-08-31 08:51
src/data/finset/basic.lean
feat(data/finset/lattice): `sup'`/`inf'` lemmas (#18989) …
Modified finset.eq_singleton_or_nontrivialView on Github →
2022-12-12 09:04
src/data/finset/basic.lean
feat(data/set/basic): A set is either a subsingleton or nontrivial (#17901) …
Added finset.eq_singleton_or_nontrivialView on Github →