Meanings
nounfree ultrafilter (plural free ultrafilters)
plural free ultrafilters
- especially nonstandard analysismathematical analysisAn ultrafilter which contains all cofinite subsets of the set which is being "filtered" by it.
Synonyms & antonyms
Opposite
Cite this entry
APA
free ultrafilter. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/free%20ultrafilter
MLA
“free ultrafilter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/free%20ultrafilter. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “free ultrafilter,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/free%20ultrafilter.
Source: free ultrafilter on Wiktionary, CC BY-SA 4.0.