Results 31 to 40 of about 1,218,583 (226)

Extension of Compact Operators from DF-spaces to C(K) spaces

open access: yesApplied General Topology, 2006
It is proved that every compact operator from a DF-space, closed subspace of another DF-space, into the space C(K) of continuous functions on a compact Hausdorff space K can be extended to a compact operator of the total DF-space.
Fernando Garibay Bonales   +1 more
doaj   +1 more source

On compact fibered spaces

open access: yesTopology and its Applications, 2002
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zoltán Szentmiklóssy, János Gerlits
openaire   +3 more sources

On the Čech-Completeness of the Space of τ-Smooth Idempotent Probability Measures

open access: yesAxioms
For the set I(X) of probability measures on a compact Hausdorff space X, we propose a new way to introduce the topology by using the open subsets of the space X.
Ljubiša D. R. Kočinac   +2 more
doaj   +1 more source

Projectively-compact spinor vertices and space-time spin-locality in higher-spin theory

open access: yesPhysics Letters B, 2022
The concepts of compact and projectively-compact spin-local spinor vertices are introduced. Vertices of this type are shown to be space-time spin-local, i.e., their restriction to any finite subset of fields is space-time local.
M.A. Vasiliev
doaj   +1 more source

Compact directed spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1970
A directed space is a partially ordered topological space in which each two elements have a common predecessor. It is a consequence of a theorem of A. D. Wallace that a compact directed space is acyclic if each of its principal ideals is acyclic. This result is extended by considering the situation where at most finitely many principal ideals are not ...
openaire   +2 more sources

(In)homogeneous invariant compact convex sets of probability measures

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2020
It is proved that for any iterated function system of contractions on a complete metric space there exists an invariant compact convex sets of probability measures of compact support on this space.
Natalia Mazurenko, Mykhailo Zarichnyi
doaj   +1 more source

On generalization of homotopy axiom

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2023
In [S. Kermit, Proc. Amer. Math. Soc., 1972, 31(1):271-275] it was proven that if G is compact topological group or field then in the homotopy axiom for Alexander-Spanier-Kolmogoroff cohomology the parameter segment [0;1] can be replaced by any compact ...
Umed Karimov
doaj   +1 more source

Compact and extremally disconnected spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
Viglino defined a Hausdorff topological space to be C-compact if each closed subset of the space is an H-set in the sense of Veličko. In this paper, we study the class of Hausdorff spaces characterized by the property that each closed subset is an S-set ...
Bhamini M. P. Nayar
doaj   +1 more source

On Radon Barycenters of Measures on Spaces of Measures

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
We study metrizability of compact sets in spaces of Radon measures with the weak topology. It is shown that if all compacta in a given completely regular topological space are metrizable, then every uniformly tight compact set in the space of Radon ...
V.I. Bogachev, S.N. Popova
doaj   +1 more source

On Some Results in Fuzzy Length Space

open access: yesAl-Mustansiriyah Journal of Science, 2020
In this paper, depending on the notion of fuzzy length space we define the Cartesian product of two fuzzy length spaces. we proved that the Cartesian product of two fuzzy length spaces is a fuzzy length space.
Raghad I. Sabri   +2 more
doaj   +1 more source

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