Results 21 to 30 of about 521,948 (283)

Ordered Involutive Operator Spaces [PDF]

open access: yesPositivity, 2007
This is a companion to recent papers of the authors; here we construct the `noncommutative Shilov boundary' of a (possibly nonunital) selfadjoint ordered space of Hilbert space operators. The morphisms in the universal property of the boundary preserve order.
Blecher, David P.   +3 more
openaire   +3 more sources

Continuous-Like Linear Operators on Bilinear Spaces

open access: yesJournal of Mathematical and Fundamental Sciences, 2020
This paper introduces continuous-like linear operators on bilinear spaces as a generalization of continuous linear operators on Hilbert spaces. It is well known that the existence of the adjoint of a linear operator on a Hilbert space is equivalent to ...
Sabarinsyah Sabarinsyah   +2 more
doaj   +1 more source

Gap Between Operator Norm and Spectral Radius for the Square of Antidiagonal Block Operator Matrices

open access: yesCommunications in Advanced Mathematical Sciences, 2022
In this work, the gap between operator norm and spectral radius for the square of antidiagonal block operator matrices in the direct sum of Banach spaces has been investigated, and also the gap between operator norm and numerical radius for the square of
Elif Otkun Çevik
doaj   +1 more source

Transitive Spaces of Operators [PDF]

open access: yesIntegral Equations and Operator Theory, 2008
We investigate algebraic and topological transitivity and, more generally, k-transitivity for linear spaces of operators. In finite dimensions, we determine minimal dimensions of k-transitive spaces for every k, and find relations between the degree of transitivity of a product or tensor product on the one hand and those of the factors on the other. We
Davidson, K. R.   +2 more
openaire   +2 more sources

Boundedness of Toeplitz type operators associated to Riesz potential operator with general kernel on Orlicz space

open access: yesOpen Mathematics, 2015
In this paper, the boundedness properties for some Toeplitz type operators associated to the Riesz potential and general integral operators from Lebesgue spaces to Orlicz spaces are proved.
Chen Dazhao
doaj   +1 more source

β-operator in Banach Spaces

open access: yesJournal of Harbin University of Science and Technology, 2018
To study some geometric properties of Banach space operator,the definitions of the β-operator and weak β-operator were given,and the properties of the β-operator and weak β-operator were discussed.
FAN Li-ying   +3 more
doaj   +1 more source

Herz-Type Hardy Spaces Associated with Operators

open access: yesJournal of Function Spaces, 2018
Suppose L is a nonnegative, self-adjoint differential operator. In this paper, we introduce the Herz-type Hardy spaces associated with operator L. Then, similar to the atomic and molecular decompositions of classical Herz-type Hardy spaces and the Hardy ...
Yan Chai, Yaoyao Han, Kai Zhao
doaj   +1 more source

Composition Operators From Harmonic Lipschitz Space Into Weighted Harmonic Zygmund Space

open access: yesInternational Journal of Analysis and Applications, 2023
The paper investigate a necessary and sufficient condition for the composition operator from harmonic Lipschitz spaces LipHα ...
M. A. Bakhit   +5 more
doaj   +1 more source

Polynomials in operator space theory: matrix ordering and algebraic aspects

open access: yes, 2017
We extend the $\lambda$-theory of operator spaces given by Defant and Wiesner (2014), that generalizes the notion of the projective, Haagerup and Schur tensor norm for operator spaces to matrix ordered spaces and Banach $*$-algebras. Given matrix regular
Kumar, Ajay   +2 more
core   +1 more source

Analytic Morrey Spaces and Bloch-Type Spaces

open access: yesJournal of Function Spaces, 2018
This paper is devoted to characterizing the boundedness of the Riemann-Stieltjes operators from analytic Morrey spaces to Bloch-type spaces. Moreover, the boundedness of the superposition operator and weighted composition operator on analytic Morrey ...
Ofori Samuel, Jianfei Wang, Yile Zhao
doaj   +1 more source

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