Results 31 to 40 of about 14,809 (294)

Algebraic reflexivity of isometry groups and automorphism groups of some operator structures [PDF]

open access: yes, 2013
We establish the algebraic re exivity of three isometry groups of operator structures: The group of all surjective isometries on the unitary group, the group of all surjective isometries on the set of all positive invertible operators equipped with ...
Botelho, Fernanda   +2 more
core   +1 more source

A Grüss type operator inequality [PDF]

open access: yesAnnals of Functional Analysis, 2017
In [P. Renaud, "A matrix formulation of Grüss inequality", Linear Algebra Appl. 335 (2001), 95--100] it was proved an operator inequality involving the usual trace functional. In this article, we give a refinement of such result and we answer positively the Renaud's open problem.
Bottazzi, T., Conde, C.
openaire   +4 more sources

Yosida Complementarity Problem with Yosida Variational Inequality Problem and Yosida Proximal Operator Equation Involving XOR-Operation

open access: yesJournal of Mathematics, 2021
Due to the importance of Yosida approximation operator, we generalized the variational inequality problem and its equivalent problems by using Yosida approximation operator. The aim of this work is to introduce and study a Yosida complementarity problem,
Rais Ahmad   +3 more
doaj   +1 more source

The Second-Order Differential Equation System with the Controlled Process for Variational Inequality with Constraints

open access: yesComplexity, 2021
In this paper, the variational inequality with constraints can be viewed as an optimization problem. Using Lagrange function and projection operator, the equivalent operator equations for the variational inequality with constraints under the certain ...
Li Wang, Xingxu Chen, Juhe Sun
doaj   +1 more source

Operator extensions of Hua’s inequality [PDF]

open access: yes, 2009
We give an extension of Hua’s inequality in pre-Hilbert C∗-modules without using convexity or the classical Hua’s inequality. As a consequence, some known and new generalizations of this inequality are deduced.
M.S. Moslehian, Moslehian, M.S.
core   +1 more source

Around the Furuta inequality—the operator inequalities (AB2A)¾≤ABA≤A3

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1995
For positive operators A and B with A invertible it is shown that (AB2A)½≤A2 implies (AB2A)¾≤ABA. The inequalities in the title for 0≤B≤A are then derived as a conquence.
Derming Wang
doaj   +1 more source

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

Correlation Inequalities for Schrödinger Operators [PDF]

open access: yesMathematical Physics, Analysis and Geometry, 2020
This paper analyzes Schödinger operators from viewpoint of correlation inequalities. We construct Griffiths inequalities for the ground state expectations by applying operator-theoretic correlation inequalities. As an example of such an application, we analyze the momentum distribution, i.e., the Fourier transform of the ground state density.
openaire   +4 more sources

Curvature inequalities and extremal operators [PDF]

open access: yesIllinois Journal of Mathematics, 2019
19 ...
Misra, Gadadhar, Reza, Md. Ramiz
openaire   +3 more sources

On further refinements for Young inequalities

open access: yesOpen Mathematics, 2018
In this paper sharp results on operator Young’s inequality are obtained. We first obtain sharp multiplicative refinements and reverses for the operator Young’s inequality.
Furuichi Shigeru, Moradi Hamid Reza
doaj   +1 more source

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