<span class="searchmatch">free</span> <span class="searchmatch">ultrafilter</span> (plural <span class="searchmatch">free</span> <span class="searchmatch">ultrafilters</span>) (mathematical analysis, especially nonstandard analysis) An <span class="searchmatch">ultrafilter</span> which contains all cofinite subsets...
<span class="searchmatch">free</span> <span class="searchmatch">ultrafilters</span> plural of <span class="searchmatch">free</span> <span class="searchmatch">ultrafilter</span>...
(mathematics) An ultrafilter such that every set belonging to it is the superset of some fixed singleton set. <span class="searchmatch">free</span> <span class="searchmatch">ultrafilter</span> principal filter <span class="searchmatch">ultrafilter</span>...
poset. filter <span class="searchmatch">free</span> <span class="searchmatch">ultrafilter</span> principal <span class="searchmatch">ultrafilter</span> poset Translations <span class="searchmatch">ultrafilter</span> (third-person singular simple present <span class="searchmatch">ultrafilters</span>, present participle...
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