Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.nonempty_iff_univ_ne_empty

Modification history

2020-02-05 06:25
src/data/set/basic.lean
refactor(*): migrate from `≠ ∅` to `set.nonempty` (#1954) …
Deleted set.nonempty_iff_univ_ne_emptyView on Github →
2018-08-29 02:42
data/set/basic.lean
feat(analysis/topology, data/set): some zerology (#295)
Added set.nonempty_iff_univ_ne_emptyView on Github →