- nonprincipal ultraproduct
- мат. неглавное ультрапроизведение
Большой англо-русский и русско-английский словарь. 2001.
nonprincipal ultraproduct
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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
