Results 21 to 30 of about 8,645,321 (278)

Further Improved Weighted Arithmetic-Geometric Operator Mean Inequalities

open access: yesMathematics, 2019
The main purpose of this paper is to present some weighted arithmetic-geometric operator mean inequalities. These inequalities are refinements and generalizations of the corresponding results.
Jianming Xue, Xingkai Hu
doaj   +1 more source

Power Series of Positive Linear Operators

open access: yesMediterranean Journal of Mathematics, 2019
A unifying approach for studying the power series of the positive linear operators from a certain class of operators is described. The Bernstein, Durrmeyer, beta, Stancu, genuine Bernstein-Durrmeyer operators, the linking operators and the Kantorovich-type modification of these operators belong to this class of operators.
Tuncer Acar, Ali Aral, Ioan Raşa
openaire   +2 more sources

Implementation of discrete positive operator valued measures on linear optical systems using cosine-sine decomposition

open access: yesPhysical Review Research, 2022
Positive operator valued measurements (POVMs) play an important role in efficient quantum communication and computation. While optical systems are one of the strongest candidates for long distance quantum communication and information processing ...
Jaskaran Singh, Arvind, Sandeep K. Goyal
doaj   +1 more source

Weighted arithmetic–geometric operator mean inequalities

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we refine and generalize some weighted arithmetic–geometric operator mean inequalities due to Lin (Stud. Math. 215:187–194, 2013) and Zhang (Banach J. Math. Anal. 9:166–172, 2015) as follows: Let A and B be positive operators.
Jianming Xue
doaj   +1 more source

The Approximation of a Modified Baskakov Operator

open access: yesJournal of Mathematics, 2023
Because of their simple form and high quality, linear arithmetical operators, particularly linear positive operators, are very popular. The number of in-depth studies on linear operator approximation is extensive, and the majority of the published ...
Ma Yingdian, Wang Weimeng
doaj   +1 more source

Positive forms on Banach spaces [PDF]

open access: yes, 2003
The first representation theorem establishes a correspondence between positive, self-adjoint operators and closed, positive forms on Hilbert spaces.
Farkas, Bálint   +3 more
core   +1 more source

On an approximating linear positive operator of Cheney-Sharma

open access: yesJournal of Numerical Analysis and Approximation Theory, 1997
Not available.
D. D. Stancu, C. Cismașiu
doaj   +2 more sources

New Refinement of the Operator Kantorovich Inequality

open access: yesMathematics, 2019
We focus on the improvement of operator Kantorovich type inequalities. Among the consequences, we improve the main result of the paper [H.R. Moradi, I.H. Gümüş, Z.
Hamid Reza Moradi   +2 more
doaj   +1 more source

Isometries of the unitary groups and Thompson isometries of the spaces of invertible positive elements in C*-algebras [PDF]

open access: yes, 2014
We show that the existence of a surjective isometry (which is merely a distance preserving map) between the unitary groups of unital C*-algebras implies the existence of a Jordan *-isomorphism between the algebras.
Hatori, Osamu, Molnár, Lajos
core   +1 more source

A stop over Jain operators and their generalizations

open access: yesAnnals of the West University of Timisoara: Mathematics and Computer Science, 2018
On the last five decades the interest of the study of positive approximation processes have emerged with growing evidence. A special place is occupied by the in-depth study of classical operators.
Agratini Octavian
doaj   +1 more source

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