-point compactifications
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Kost, Frank (1973)
Portugaliae mathematica
David Buhagiar, Emmanuel Chetcuti, Hans Weber (2014)
Open Mathematics
We study the behaviour of ℵ-compactness, extent and Lindelöf number in lexicographic products of linearly ordered spaces. It is seen, in particular, that for the case that all spaces are bounded all these properties behave very well when taking lexicographic products. We also give characterizations of these notions for generalized ordered spaces.
Alessandro Fedeli (1998)
Commentationes Mathematicae Universitatis Carolinae
A subset of a Hausdorff space is called an H-set in if for every open family in such that there exists a countable subfamily of such that . In this paper we introduce a new cardinal function and show that for every H-set of a Hausdorff space .
П.К. Осметеску, М.М. Чобан (1975)
Matematiceskie issledovanija
В.И. Малыхин (1979)
Sibirskij matematiceskij zurnal
Dmitriĭ B. Shakhmatov (1983)
Commentationes Mathematicae Universitatis Carolinae
Vladimir Vladimirovich Uspenskij (1983)
Commentationes Mathematicae Universitatis Carolinae
И.В. Протасов (1984)
Sibirskij matematiceskij zurnal
М.Г. Ткаченко (1983)
Sibirskij matematiceskij zurnal
В.К. Бельнов (1974)
Matematiceskij sbornik
В.И. Малыхин (1987)
Sibirskij matematiceskij zurnal
Mihail G. Tkachenko (1979)
Commentationes Mathematicae Universitatis Carolinae
Mihail G. Tkachenko (1979)
Commentationes Mathematicae Universitatis Carolinae
Б.А. Ефимов (1975)
Matematiceskij sbornik
М.Г. Ткаченко (1982)
Sibirskij matematiceskij zurnal
Г.И. Чертанов (1988)
Sibirskij matematiceskij zurnal
М.Г. Ткаченко (1985)
Sibirskij matematiceskij zurnal
А.Г. Лейдерман, В.И. Малыхин (1988)
Sibirskij matematiceskij zurnal
Г.С. Маканин (1971)
Matematiceskij sbornik
Б.А. Ефимов (1970)
Sibirskij matematiceskij zurnal
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