Results 31 to 40 of about 206,253 (185)

An operator inequality related to Jensen’s inequality [PDF]

open access: yesProceedings of the American Mathematical Society, 2001
Summary: For bounded non-negative operators \(A\) and \(B\), Furuta showed \[ 0\leq A \leq B \text{ implies } A^{\frac{r}{2}}B^sA^{\frac{r}{2}} \leq (A^{\frac{r}{2}}B^tA^{\frac{r}{2}})^{\frac{s+r}{t+r}}\quad (0\leq r, 0\leq s \leq t).
openaire   +2 more sources

Operator Ky Fan type inequalities

open access: yes, 2018
In this paper, we extend some significant Ky Fan type inequalities in a large setting to operators on Hilbert spaces and derive their equality conditions.
Habibzadeh, S.   +2 more
core   +1 more source

Intersection theory and the Horn inequalities for invariant subspaces [PDF]

open access: yes, 2015
We provide a direct, intersection theoretic, argument that the Jordan models of an operator of class C_{0}, of its restriction to an invariant subspace, and of its compression to the orthogonal complement, satisfy a multiplicative form of the Horn ...
Bercovici, Hari, Li, Wing Suet
core   +2 more sources

Operator Aczél inequality

open access: yesLinear Algebra and its Applications, 2011
p pages; to appear in Linear Algebra Appl. (LAA)
openaire   +2 more sources

Some operator Bellman type inequalities

open access: yes, 2015
In this paper, we employ the Mond--Pe\v{c}ari\'c method to establish some reverses of the operator Bellman inequality under certain conditions. In particular, we show \begin{equation*} \delta I_{\mathscr K}+\sum_{j=1}^n\omega_j\Phi_j\left((I_{\mathscr H}-
Bakherad, Mojtaba, Morassaei, Ali
core   +1 more source

Mixed norm estimates for the Riesz transforms associated to Dunkl harmonic oscillators [PDF]

open access: yes, 2014
In this paper we study weighted mixed norm estimates for Riesz transforms associated to Dunkl harmonic oscillators. The idea is to show that the required inequalities are equivalent to certain vector valued inequalities for operator defined in terms of ...
Boggarapu, Pradeep, Thangavelu, S.
core   +2 more sources

Operator inequalities and normal operators

open access: yesBanach Journal of Mathematical Analysis, 2012
Over the last years, a lot of work has appeared on operator inequalities. The present authors use some advantages offered by the context of finite-dimensional Hilbert spaces and establish complete characterizations of certain distinguished classes of operators (self-adjoint, unitary reflection, normal) in terms of operator inequalities.
Menkad, Safa, Seddik, Ameur
openaire   +2 more sources

The Hadamard Determinant Inequality - Extensions to Operators on a Hilbert Space

open access: yes, 2017
A generalization of classical determinant inequalities like Hadamard's inequality and Fischer's inequality is studied. For a version of the inequalities originally proved by Arveson for positive operators in von Neumann algebras with a tracial state, we ...
Nayak, Soumyashant
core   +1 more source

A novel method for Milne-type inequalities using proportional Caputo-hybrid operator

open access: yesMiskolc Mathematical Notes
In mathematics and the applied sciences, fractional calculus is a significant generalization and a very useful tool as it overcomes many limitations of classical analysis.
İzzetti̇n Demi̇r
doaj   +1 more source

Inequalities for quantum skew information

open access: yes, 2008
We study quantum information inequalities and show that the basic inequality between the quantum variance and the metric adjusted skew information generates all the multi-operator matrix inequalities or Robertson type determinant inequalities studied by ...
A. Andai   +17 more
core   +1 more source

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