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Theorem set.nmem_singleton_empty

Modification history

2020-02-05 06:25
src/data/set/basic.lean
refactor(*): migrate from `≠ ∅` to `set.nonempty` (#1954) …
Modified set.nmem_singleton_emptyView on Github →
2019-04-20 20:07
src/data/set/basic.lean
feat(data/[fin]set): add some more basic properties of (finite) sets (#948) …
Added set.nmem_singleton_emptyView on Github →