Results 51 to 60 of about 1,218,583 (226)

Classifying spaces of compact Lie groups that are p-compact for all prime numbers

open access: yes, 2007
We consider a problem on the conditions of a compact Lie group G that the loop space of the p-completed classifying space be a p-compact group for a set of primes. In particular, we discuss the classifying spaces BG that are p-compact for all primes when
Ishiguro, Kenshi
core   +1 more source

Proper actions and proper invariant metrics

open access: yes, 2008
We show that if a (locally compact) group $G$ acts properly on a locally compact $\sigma$-compact space $X$ then there is a family of $G$-invariant proper continuous finite-valued pseudometrics which induces the topology of $X$.
Abels, Herbert   +2 more
core   +2 more sources

The Entropy of Co-Compact Open Covers

open access: yesEntropy, 2013
Co-compact entropy is introduced as an invariant of topological conjugation for perfect mappings defined on any Hausdorff space (compactness and metrizability are not necessarily required).
Steven Bourquin   +4 more
doaj   +1 more source

Measure-compact spaces

open access: yesTopology and its Applications, 1992
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

SIFAT KOMPAK DALAM RUANG HAUSDORFF

open access: yesJurnal Matematika, 2012
The inspiration of the definition of “compactness” comes from the real number system. Closed and bounded sets in the real line were considered as an excellent model to show a generalized version of the compactness in a topological space.
LUH PUTU IDA HARINI
doaj   +1 more source

Some remarks on bv(s)-metric spaces and fixed point results with an application

open access: yesNonlinear Analysis, 2020
We compare the newly defined bv(s)-metric spaces with several other abstract spaces like metric spaces, b-metric spaces and show that some well-known results, which hold in the latter class of spaces, may not hold in bv(s)-metric spaces.
Hiranmoy Garai   +3 more
doaj   +1 more source

Perfect maps in compact (countably compact) spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
In this paper, among other results, characterizations of perfect maps in compact Hausdorff(Fréchet, countably compact, Hausdorff) spaces are obtained.
G. L. Garg, Asha Goel
doaj   +1 more source

Indestructibility of compact spaces

open access: yesTopology and its Applications, 2013
In this article we investigate which compact spaces remain compact under countably closed forcing. We prove that, assuming the Continuum Hypothesis, the natural generalizations to $ _1$-sequences of the selection principle and topological game versions of the Rothberger property are not equivalent, even for compact spaces.
Rodrigo R. Dias   +2 more
openaire   +3 more sources

Commutative Topological Semigroups Embedded into Topological Abelian Groups

open access: yesAxioms, 2020
In this paper, we give conditions under which a commutative topological semigroup can be embedded algebraically and topologically into a compact topological Abelian group.
Julio César Hernández Arzusa
doaj   +1 more source

Compactness and collective compactness in spaces of compact operators

open access: yesJournal of Mathematical Analysis and Applications, 1981
AbstractThis is a study of compactness in (a) spaces Kb(X, Y) of compact linear operators, (b) injective tensor products X \̃boϵ Y, and (c) spaces Lc(X, Y) of continuous linear operators, and its various relationships with equicontinuity and collective compactness.
openaire   +3 more sources

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