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Theorem filter.ultrafilter_iff_compl_mem_iff_not_mem'

Modification history

2020-12-10 13:58
src/order/filter/ultrafilter.lean
refactor(order/filter/ultrafilter): drop `filter.is_ultrafilter` (#5264) …
Deleted filter.ultrafilter_iff_compl_mem_iff_not_mem'View on Github →
2020-10-12 23:17
src/order/filter/ultrafilter.lean
feat(topology/category/Compactum): Compact Hausdorff spaces (#4555) …
Added filter.ultrafilter_iff_compl_mem_iff_not_mem'View on Github →