principal ultrafilters

A form of principal ultrafilter — An ultrafilter such that every set belonging to it is the superset of some fixed singleton set.

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Meanings

noun
  1. pluralplural of principal ultrafilter
Cite this entry
APA

principal ultrafilters. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/principal%20ultrafilters

MLA

“principal ultrafilters.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/principal%20ultrafilters. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “principal ultrafilters,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/principal%20ultrafilters.

Source: principal ultrafilters on Wiktionary, CC BY-SA 4.0.