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Theorem ultrafilter.exists_le

Modification history

2022-10-27 07:38
src/order/filter/ultrafilter.lean
feat(order/filter/ultrafilter): an ultrafilter is an atom in the lattice of filters (#17116) …
Modified ultrafilter.exists_leView on Github →
2020-12-10 13:58
src/order/filter/ultrafilter.lean
refactor(order/filter/ultrafilter): drop `filter.is_ultrafilter` (#5264) …
Added ultrafilter.exists_leView on Github →