Results 11 to 20 of about 68,793 (266)

On the Structure of Topological Spaces [PDF]

open access: yesAxioms, 2022
The structure of topological spaces is analysed here through the lenses of fibrous preorders. Each topological space has an associated fibrous preorder and those fibrous preorders which return a topological space are called spatial.
Nelson Martins-Ferreira
doaj   +3 more sources

Cycle spaces in topological spaces [PDF]

open access: yesJournal of Graph Theory, 2008
AbstractWe develop a general model of edge spaces in order to generalize, unify, and simplify previous work on cycle spaces of infinite graphs. We give simple topological criteria to show that the fundamental cycles of a (generalization of a) spanning tree generate the cycle space in a connected, compact, weakly Hausdorff edge space.
Antoine Vella, R. Bruce Richter
openaire   +1 more source

On the gamma spectrum of multiplication gamma acts

open access: yesKuwait Journal of Science, 2021
In this paper we introduce the concept of topological gamma act as a generalization of Zariski   topology .  Some topological   properties of  this topology   are studied.
Mehdi S. Abbas, Samer A. Jubair
doaj   +1 more source

Hyperspaces of topological vector spaces: their embedding in topological vector spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1976
Let L L be a real (Hausdorff) topological vector space. The space
Prem Prakash, Murat R. Sertel
openaire   +3 more sources

Topological nodal line semimetals in holography

open access: yesJournal of High Energy Physics, 2018
We show a holographic model of a strongly coupled topological nodal line semimetal (NLSM) and find that the NLSM phase could go through a quantum phase transition to a topologically trivial state.
Yan Liu, Ya-Wen Sun
doaj   +1 more source

New Types of Topologies and Neutrosophic Topologies (Improved Version) [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
In this paper we recall the six new types of topologies, and their corresponding topological spaces, that we introduced in the last years (2019-20223), such as: NeutroTopology, AntiTopology, Refined Neutrosophic Topology, Refined Neutrosophic Crisp ...
Florentin Smarandache
doaj   +1 more source

Discretization of Topological Spaces [PDF]

open access: yesThe Quarterly Journal of Mathematics, 2016
19 ...
Amini, Massoud, Golestani, Nasser
openaire   +2 more sources

Topological invariants for holographic semimetals

open access: yesJournal of High Energy Physics, 2018
We study the behavior of fermion spectral functions for the holographic topological Weyl and nodal line semimetals. We calculate the topological invariants from the Green functions of both holographic semimetals using the topological Hamiltonian method ...
Yan Liu, Ya-Wen Sun
doaj   +1 more source

Constructions and Properties of Quasi Sigma-Algebra in Topological Measure Space

open access: yesAxioms, 2022
The topological views of a measure space provide deep insights. In this paper, the sigma-set algebraic structure is extended in a Hausdorff topological space based on the locally compactable neighborhood systems without considering strictly (metrized ...
Susmit Bagchi
doaj   +1 more source

Countable Fuzzy Topological Space and Countable Fuzzy Topological Vector Space

open access: yesJournal of Mathematical and Fundamental Sciences, 2015
This paper deals with countable fuzzy topological spaces, a generalization of the notion of fuzzy topological spaces. A collection of fuzzy sets F on a universe X forms a countable fuzzy topology if in the definition of a fuzzy topology, the condition of
Apu Kumar Saha, Debasish Bhattacharya
doaj   +1 more source

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