Strongly homotopically stabile points
A. Lelek (1977)
Colloquium Mathematicae
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A. Lelek (1977)
Colloquium Mathematicae
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Rabtsevich, V.A. (1997)
Memoirs on Differential Equations and Mathematical Physics
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Yan-Kui Song (2015)
Open Mathematics
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A space X is absolutely strongly star-Hurewicz if for each sequence (Un :n ∈ℕ/ of open covers of X and each dense subset D of X, there exists a sequence (Fn :n ∈ℕ/ of finite subsets of D such that for each x ∈X, x ∈St(Fn; Un) for all but finitely many n. In this paper, we investigate the relationships between absolutely strongly star-Hurewicz spaces and related spaces, and also study topological properties of absolutely strongly star-Hurewicz spaces.
Andrzej Łuczak (2015)
Colloquium Mathematicae
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We generalize a result of Choi and Effros on the range of a contractive completely positive projection in a C*-algebra to the case when this projection is only strongly positive using, moreover, an elementary argument instead of a 2×2-matrix technique.
Yan-Kui Song (2013)
Commentationes Mathematicae Universitatis Carolinae
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A space is strongly star-Menger if for each sequence of open covers of , there exists a sequence of finite subsets of such that is an open cover of . In this paper, we investigate the relationship between strongly star-Menger spaces and related spaces, and also study topological properties of strongly star-Menger spaces.
Dušan Milovančević (1985)
Publications de l'Institut Mathématique
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C. C. Travis, G. F. Webb (1981)
Colloquium Mathematicae
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Hans Schoutens (1994)
Compositio Mathematica
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Gaspar Martínez Mora (1996)
Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
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The systems of an arbitrary number of linear inequalities OVer a real locally convex space have been classified in three classes, namely: consistent, weakly inconsistent and strongly inconsistent, i.e. having ordinary solutions, weak solutions or notsolutions respectively. In this paper, the third type is divided in two classes: strict-strongly and quasi-strongly inconsistent and is given a topology over a quotient space of the set of systems over finite- dimensional spaces, that yields...
G.F. Webb (1980)
Aequationes mathematicae
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L. Morales, M. Tkachenko (2016)
Topological Algebra and its Applications
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A topological group is strongly realcompact if it is topologically isomorphic to a closed subgroup of a product of separable metrizable groups. We show that if H is an invariant Čech-complete subgroup of an ω-narrow topological group G, then G is strongly realcompact if and only if G/H is strongly realcompact. Our proof of this result is based on a thorough study of the interaction between the P-modification of topological groups and the operation of taking quotient groups.