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Theorem filter.ne_empty_of_mem_ultrafilter

Modification history

2020-12-10 13:58
src/order/filter/ultrafilter.lean
refactor(order/filter/ultrafilter): drop `filter.is_ultrafilter` (#5264) …
Deleted filter.ne_empty_of_mem_ultrafilterView on Github →
2020-10-28 07:49
src/order/filter/ultrafilter.lean
refactor(order/filter): make `filter.has_mem semireducible (#4807) …
Modified filter.ne_empty_of_mem_ultrafilterView on Github →
2020-10-12 23:17
src/order/filter/ultrafilter.lean
feat(topology/category/Compactum): Compact Hausdorff spaces (#4555) …
Added filter.ne_empty_of_mem_ultrafilterView on Github →