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Weak topologies on subspaces of $C(S)$ [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1971
Let S be a locally compact Hausdorff space, E a linear subspace of C(S). It is shown that the unit ball of E is compact in the strict topology if and only if both of the following two conditions are satisfied: (1) E is the Banach space dual of M(S)/EO in the integration pairing, and (2) the bounded weak star topology on E coincides with the strict ...
Joel H. Shapiro
openalex   +3 more sources

Zariski Subspace Topologies On Ideals

open access: greenHacettepe Journal of Mathematics and Statistics, 2018
Summary: In this paper, we show how there are tight relationships between algebraic properties of a commutative ring \(R\) and topological properties of open subsets of Zariski topology on the prime spectrum of \(R\). We investigate some algebraic conditions for open subsets of Zariski topology to become quasi-compact, dense and irreducible.
Ortaç Öneş, Mustafa Alkan
openalex   +4 more sources

Paracompact subspaces in the box product topology [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1996
In 1975 E. K. van Douwen showed that if ( X n ) n ∈ ω ( X_n )_{ n \in \omega } is a family of Hausdorff spaces such that all finite subproducts ∏ n > m
Peter Nyikos, Leszek Piątkiewicz
openalex   +2 more sources

TOPOLOGIES GENERATED BY DISCRETE SUBSPACES

open access: greenGlasnik matematički, 2002
A topological space \(X\) is called discretely generated if for every \(A\subset X\) the closure of \(A\) is the union of the closures of discrete subspaces of \(A\), and \(X\) is a weakly discretely generated space if for every \(A\subset X\) with \(\overline{A}\neq A\) there exists a discrete subset \(D\) of \(A\) such that \(\overline{D ...
Alan Dow   +3 more
openalex   +4 more sources

PSEUDOCOMPACT GROUP TOPOLOGIES WITH PRESCRIBED TOPOLOGICAL SUBSPACES

open access: green, 2009
We prove that every pseudocompact topological Abelian group G admits a pseudocompact topological group topology with a non-trivial convergent sequence. Imposing some restrictions on the properties of G, stronger properties are also obtained.
Jorge Galindo   +2 more
openalex   +2 more sources

Decoherence and relaxation of topological states in extended quantum Ising models

open access: yesSciPost Physics, 2019
We study the decoherence and the relaxation dynamics of topological states in an extended class of quantum Ising chains which can present a manyfold ground state subspace.
Hannes Weisbrich, Wolfgang Belzig, Gianluca Rastelli
doaj   +3 more sources

Algebraic properties of subspace topologies [PDF]

open access: bronzeAdvances in Pure and Applied Mathematics
Summary: It is shown that the collection of all topologies on a given set \(X\) coincides with the set of subsemirings of the power set \(\mathcal{P}(X)\) (equipped with union and intersection) if and only if \(X\) is finite. Furthermore, given a topological space \((X, \mathcal{T})\) and a subset \(A\) of \(X\), we characterize when the subspace ...
Noômen Jarboui, Bana Al Subaiei
openalex   +3 more sources

Triangular Neutrosophic Topology [PDF]

open access: yesNeutrosophic Sets and Systems, 2021
In this current article, the primary focus is to develop the concept of neutrosophic topology as triangular neutrosophic topology. We extend the neutrosophic set operations, we newly introduce the defuzzification, examples, and basics to clear the ...
Ali Hamza   +2 more
doaj   +1 more source

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