Associations to the word «Ultrafilter»

Wiktionary

ULTRAFILTER, noun. (mathematics) (of a set, whose subsets are partially ordered by inclusion) A proper filter which has a law of dichotomy for complements.
ULTRAFILTER, noun. (mathematics) (order theory) A filter (subset of a poset) that is maximal as a set with respect to the definition of proper .

Wise words

All our words from loose using have lost their edge.
Ernest Hemingway