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Theorem ultrafilter.union_mem_iff

Modification history

2022-10-01 18:32
src/order/filter/ultrafilter.lean
feat(order/filter/*,topology/noetherian_space): add lemmas about `cofinite` (#16498) …
Modified ultrafilter.union_mem_iffView on Github →
2020-12-10 13:58
src/order/filter/ultrafilter.lean
refactor(order/filter/ultrafilter): drop `filter.is_ultrafilter` (#5264) …
Added ultrafilter.union_mem_iffView on Github →