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Role of Shift Vector in High-Harmonic Generation from Noncentrosymmetric Topological Insulators under Strong Laser Fields [PDF]

open access: yesPhysical Review X, 2022
As a promising avenue to obtain a new extreme ultraviolet light source and detect electronic properties, high-harmonic generation (HHG) has been actively developed in both theory and experiment.
Chen Qian   +8 more
doaj   +2 more sources

Fixed-Point Theory on a Frechet Topological Vector Space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2011
We establish some versions of fixed-point theorem in a Frechet topological vector space E. The main result is that every map A=BC (where B is a continuous map and C is a continuous linear weakly compact operator) from a closed convex subset of a Frechet ...
Afif Ben Amar   +2 more
doaj   +2 more sources

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

open access: greenPhysical 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, Jiangbin Gong
openalex   +3 more sources

Equivalence of weak and strong modes of measures on topological vector spaces [PDF]

open access: greenInverse Problems, 2018
A strong mode of a probability measure on a normed space X can be defined as a point u such that the mass of the ball centred at u uniformly dominates the mass of all other balls in the small-radius limit.
Han Cheng Lie, T. J. Sullivan
openalex   +3 more sources

α-Topological Vector Spaces

open access: yesScience Journal of University of Zakho, 2017
The main objective of this paper is to present the study of α-topological vector spaces. α-topological vector spaces are defined by using α-open sets and α-irresolute mappings.
Hariwan Z. Ibrahim
doaj   +2 more sources

Common Fixed Points for Maps on Topological Vector Space Valued Cone Metric Spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2009
We introduced a notion of topological vector space valued cone metric space and obtained some common fixed point results. Our results generalize some recent results in the literature.
Ismat Beg, Akbar Azam, Muhammad Arshad
doaj   +2 more sources

Fixed Point in Topological Vector Space-Valued Cone Metric Spaces

open access: yesFixed Point Theory and Applications, 2010
We obtain common fixed points of a pair of mappings satisfying a generalized contractive type condition in TVS-valued cone metric spaces. Our results generalize some well-known recent results in the literature.
Beg Ismat, Arshad Muhammad, Azam Akbar
doaj   +3 more sources

Topological Structures of Energy Flow: Poynting Vector Skyrmions. [PDF]

open access: yesPhysical Review Letters, 2023
Topological properties of energy flow of light are fundamentally interesting and may introduce novel physical phenomena associated with directional light scattering and optical trapping.
Sicong Wang   +9 more
semanticscholar   +1 more source

Algebraic characterisation of hyperspace corresponding to topological vector space [PDF]

open access: yesJournal of Hyperstructures, 2023
Let X be a Hausdor  topological vector space over the field of real or complex numbers. When Vietoris topology is given,the hyperspace ℘(X) of all nonempty compact subsets of X forms a topological exponential vector space over the same field. Exponential
Jayeeta Saha, Sandip Jana
doaj   +1 more source

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

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