Results 81 to 90 of about 522,225 (183)

Local spectral radius formulas for a class of unbounded operators on Banach spaces

, 2011
We exhibit a general class of unbounded operators in Banach spaces which can be shown to have the single-valued extension property, and for which the local spectrum at suitable points can be determined. We show that a local spectral radius formula holds,
Andersen, Nils Byrial, de Jeu, Marcel
core  

Characterizations of Ordered Self-adjoint Operator Spaces

, 2016
In this paper, we generalize the work of Werner and others to develop two abstract characterizations for self-adjoint operator spaces. The corresponding abstract objects can be represented as self-adjoint subspaces of $B(H)$ in such a way that both a ...
Russell, Travis
core  

Inversion of a polynomial operator with the Maslov-Chebyshev symbol

Современная математика: Фундаментальные направления
The Maslov–Heaviside method is applied to the inversion of a polynomial operator by the Maslov–Chebyshev symbol introduced in the paper. The result is applied to the proof of a theorem on the Bessel operator in the Stepanov spaces \(S_p(\mathbb{R}^n),\) \
A. V. Kostin
doaj   +1 more source

Some New Sobolev-Type Theorems for the Rough Riesz Potential Operator on Grand Variable Herz Spaces

Mathematics
In this paper, our first objective is to define the idea of grand variable Herz spaces. Then, our main goal is to prove boundedness results for operators, including the rough Riesz potential operator of variable order and the fractional Hardy operators ...
Ghada AlNemer, Ghada Ali Basendwah, Babar Sultan, Ioan-Lucian Popa   +3 more
doaj   +1 more source

Variable Herz–Morrey estimates for rough fractional Hausdorff operator

Journal of Inequalities and Applications
As a first attempt, we obtain the boundedness of the rough fractional Hausdorff operator on variable exponent Herz-type spaces. The method used in this paper enables us to study the operator on some other function spaces with variable exponents.
Amjad Hussain, Ilyas Khan, Abdullah Mohamed   +2 more
doaj   +1 more source

Operators on function spaces [PDF]

Bulletin of the American Mathematical Society, 1972
Brooks, James K., Lewis, Paul W.
openaire   +3 more sources

Three-operator Problems in Banach Spaces

Extracta Mathematicae, 2018
We study the analogue of 3-space problems for classes of operators acting on Banach spaces. We show examples of classes of operators having or failing the 3-operator property, and give several methods to obtain classes with this property.
Jesús M.F. Castillo, Muneo Chō, Manuel González   +2 more
doaj  

Additivity and Chain Rules for Quantum Entropies via Multi-index Schatten Norms. [PDF]

Commun Math Phys
Fawzi O, Kochanowski J, Rouzé C, Van Himbeeck T.   +3 more
europepmc   +1 more source

Interoperability architecture for data spaces. [PDF]

Data Brief
Soininen JP, Sánchez CF, Modafferi S, Campbell S, Tomas N, Salant E, Manara C, Kalaoja J, Datta SK.   +8 more
europepmc   +1 more source

Robustness of Topological Phases on Aperiodic Lattices. [PDF]

Math Phys Anal Geom
Li Y.
europepmc   +1 more source