Results 11 to 20 of about 574,732 (350)

Metrizability of Pseudo Topological Vector Spaces

open access: diamond, 2021
In the present work, we introduce the notion of pseudo-seminorm, then we established, a criterion for the metrizability of a pseudo vector space 𝛯 with a pseudo topology 𝜏. It is specified, that for the metrizability of 𝛯 is necessary and sufficient that
Intesar Harbi, Z. Al-Nafie
semanticscholar   +2 more sources

L‐fuzzifying topological vector spaces [PDF]

open access: goldInternational Journal of Mathematics and Mathematical Sciences, 2005
The main purpose of this paper is to introduce a concept of L‐fuzzifying topological vector spaces (here L is a completely distributive lattice) and study some of their basic properties. Also, a characterization of such spaces in terms of the corresponding L‐fuzzifying neighborhood structure of the zero element is given.
Cong-Hua Yan, Cong-Xin Wu
openaire   +5 more sources

Topological Vector Space-Valued Cone Metric Spaces and Fixed Point Theorems

open access: green, 2010
We develop the theory of topological vector space valued cone metric spaces with nonnormal cones. We prove three general fixed point results in these spaces and deduce as corollaries several extensions of theorems about fixed points and common fixed ...
Z. Kadelburg   +2 more
semanticscholar   +3 more sources

A countable dense homogeneous topological vector space is a Baire space [PDF]

open access: yesProceedings of the American Mathematical Society, 2020
We prove that every homogeneous countable dense homogeneous topological space containing a copy of the Cantor set is a Baire space. In particular, every countable dense homogeneous topological vector space is a Baire space.
T. Dobrowolski   +2 more
semanticscholar   +1 more source

On Characterization of δ-Topological Vector Space

open access: yesRatio Mathematica, 2021
The main objective of this paper is to present the study of δ-topological vector space, δ-topological vector space are defined by using δ-open sets and δ-continuous mapping which was introduced by J.H.H. Bayati[3] in 2019. In this paper, along with basic
Shallu Sharma   +2 more
doaj   +1 more source

A DIFFERENTIABLE STRUCTURE ON A FINITE DIMENSIONAL REAL VECTOR SPACE AS A MANIFOLD

open access: yesBarekeng, 2023
There are three conditions for a topological space to be said a topological manifold of dimension  : Hausdorff space, second-countable, and the existence of homeomorphism of a neighborhood of each point to an open subset of  or -dimensional locally ...
Edi Kurniadi
doaj   +1 more source

On Bishop–Phelps and Krein–Milman Properties

open access: yesMathematics, 2023
A real topological vector space is said to have the Krein–Milman property if every bounded, closed, convex subset has an extreme point. In the case of every bounded, closed, convex subset is the closed convex hull of its extreme points, then we say that ...
Francisco Javier GarcĂ­a-Pacheco
doaj   +1 more source

Geometric characterization of non-Hermitian topological systems through the singularity ring in pseudospin vector space [PDF]

open access: yesPhysical review B, 2019
This work unveils how geometric features of two-band non-Hermitian Hamiltonians can completely classify the topology of their eigenstates and energy manifolds.
Linhu Li, Ching Hua Lee, J. Gong
semanticscholar   +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 K [ L ] \mathcal {K}[L] of nonempty compact subsets of L L forms a (Hausdorff) topological semivector space with singleton origin when K [ L
Prem Prakash, Murat R. Sertel
openaire   +3 more sources

Topological transformation and free-space transport of photonic hopfions [PDF]

open access: yesAdvanced Photonics, 2022
Structured light fields embody strong spatial variations of polarisation, phase and amplitude. Understanding, characterization and exploitation of such fields can be achieved through their topological properties.
Yijie Shen   +5 more
semanticscholar   +1 more source

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