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Theorem set.singleton_ne_empty

Modification history

2022-12-05 00:55
src/data/set/basic.lean
chore(data/{finset,set}/basic): Align lemmas (#17805) …
Added set.singleton_ne_emptyView on Github →
2020-02-05 06:25
src/data/set/basic.lean
refactor(*): migrate from `≠ ∅` to `set.nonempty` (#1954) …
Deleted set.singleton_ne_emptyView on Github →
2019-12-05 21:00
src/data/set/basic.lean
feat(data/set/basic): more lemmas about `set.nonempty` (#1780) …
Modified set.singleton_ne_emptyView on Github →
2017-08-11 17:57
data/set/basic.lean
algebra/lattice/filter: cleanup move theorems to appropriate places
Modified set.singleton_ne_emptyView on Github →
2017-07-23 18:07
data/set/basic.lean
refactor(algebra/lattice): use *experiment files, move set.lattice to .basic
Modified set.singleton_ne_emptyView on Github →
2017-07-23 15:16
data/set/lattice.lean
refactor(*): import content from lean/library/data and library_dev
Added set.singleton_ne_emptyView on Github →