ultrafilter

ultrafilter
A filter that is maximal as a set with respect to the definition of .

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  • Ultrafilter — In the mathematical field of set theory, an ultrafilter on a set X is a collection of subsets of X that is a filter, that cannot be enlarged (as a filter). An ultrafilter may be considered as a finitely additive measure. Then every subset of X is …   Wikipedia

  • Ultrafilter — Ein Ultrafilter ist in der Mathematik ein Mengenfilter auf einer Menge X, so dass für jede Teilmenge A von X entweder A selbst oder ihr Komplement X − A (Differenzmenge) Element des Mengenfilters ist. Ultrafilter sind somit genau diejenigen… …   Deutsch Wikipedia

  • ultrafilter — I. |əltrə+ noun Etymology: International Scientific Vocabulary ultra + filter : a dense filter used for the filtration of a colloidal solution that holds back the dispersed particles but not the liquid II. transitive verb : to cause to pass… …   Useful english dictionary

  • Ultrafilter — ypač tankus filtras statusas T sritis radioelektronika atitikmenys: angl. ultrafilter vok. Ultrafilter, n rus. фильтр сверхтонкой очистки, m pranc. ultrafiltre, m …   Radioelektronikos terminų žodynas

  • ultrafilter — ypač tankus filtras statusas T sritis radioelektronika atitikmenys: angl. ultrafilter vok. Ultrafilter, n rus. фильтр сверхтонкой очистки, m pranc. ultrafiltre, m …   Radioelektronikos terminų žodynas

  • Ultrafilter — ultrafiltras statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas didesnėms kaip 0,1 μm dalelėms filtruoti. atitikmenys: angl. ultrafilter vok. Ultrafilter, n rus. ультрафильтр, m pranc. ultrafiltre, m …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • ultrafilter — ultrafiltras statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas didesnėms kaip 0,1 μm dalelėms filtruoti. atitikmenys: angl. ultrafilter vok. Ultrafilter, n rus. ультрафильтр, m pranc. ultrafiltre, m …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • ultrafilter — ultrafiltration /ul treuh fil tray sheuhn/, n. /ul treuh fil teuhr/, n. 1. Physical Chem. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles. 2. Math. a filter in a… …   Universalium

  • ultrafilter — ul•tra•fil•ter [[t]ˌʌl trəˈfɪl tər[/t]] n. 1) chem. a filter for purifying sols, having a membrane with pores sufficiently small to prevent the passage of the suspended particles 2) chem. to purify by means of an ultrafilter • Etymology: 1905–10… …   From formal English to slang

  • ultrafilter — /ʌltrəˈfɪltə/ (say ultruh filtuh) noun 1. a filter for the separation of solute molecules of different sizes, using a semipermeable membrane filter through which the solute cannot pass. –verb (t) 2. to separate in an ultrafilter …  

  • últrafílter — tra m (ȗ í) teh. naprava za filtracijo, navadno pod zvišanim tlakom, ki se uporablja za ločevanje koloidnih delcev in makromolekulskih snovi od tekočine: ultracentrifuga in ultrafilter …   Slovar slovenskega knjižnega jezika

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