Results 31 to 40 of about 206,778 (282)

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

, 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

Correlation Inequalities for Schrödinger Operators [PDF]

Mathematical Physics, Analysis and Geometry, 2020
This paper analyzes Sch dinger 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

Functional version for Furuta parametric relative operator entropy

Journal of Inequalities and Applications, 2018
Functional version for the so-called Furuta parametric relative operator entropy is here investigated. Some related functional inequalities are also discussed.
Mustapha Raïssouli, Shigeru Furuichi
doaj   +1 more source

Generalized k-Fractional Integral Operators Associated with Pólya-Szegö and Chebyshev Types Inequalities

Fractal and Fractional, 2022
Inequalities related to derivatives and integrals are generalized and extended via fractional order integral and derivative operators. The present paper aims to define an operator containing Mittag-Leffler function in its kernel that leads to deduce many
Zhiqiang Zhang, Ghulam Farid, Sajid Mehmood, Kamsing Nonlaopon, Tao Yan   +4 more
doaj   +1 more source

Some operator inequalities via convexity [PDF]

Linear and Multilinear Algebra, 2021
In this article, we employ a standard convex argument to obtain new and refined inequalities related to the matrix mean of two accretive matrices, the numerical radius and the Tsallis relative operator entropy.
Hamid Reza Moradi, Shigeru Furuichi, Mohammad Sababheh   +2 more
openaire   +2 more sources

Norm and Numerical Radius Inequalities for Sums of Bounded Linear Operators in Hilbert Spaces [PDF]

, 2006
Some inequalities for the operator norm and numerical radius of sums of bounded linear operators in Hilbert spaces are given.
Dragomir, Sever S
core   +2 more sources

Schur multiplier operator and matrix inequalities [PDF]

Journal of Mahani Mathematical Research, 2023
In this note we obtain a reverse version of the Haagerup Theorem. In particular, if $ A \in \mathbb{M}_{n}$ has a $ 2\times2- $ principal submatrix as $ \left[ \begin{array}{cc}1& \alpha \\\beta & 1\\\end{array}\right]$ with $ \beta \neq \bar{\alpha ...
Alemeh Sheikhhosseini
doaj   +1 more source

Energy inequalities for a model of wave propagation in cold plasma [PDF]

, 2007
Energy inequalities are derived for an elliptic-hyperbolic operator arising in plasma physics. These inequalities imply the existence of distribution and weak solutions to various closed boundary-value problems.
Otway, Thomas H.
core   +5 more sources

$L^q$ Inequalities and Operator Preserving Inequalities

Analysis in Theory and Applications, 2014
Summary: Let \(\mathbb{P}_n\) be the class of polynomials of degree at most \(n\). \textit{N. A. Rather} and \textit{M. A. Shah} [J. Math. Anal. Appl. 399, No. 1, 422--432 (2013; Zbl 1259.30006)] proved that if \(P\in \mathbb{P}_n\) and \(P(z)\neq 0\) in \(|z|0\) and \(0 \leq ...
Bidkham, M., Ahmadi, S.
openaire   +1 more source

Several inequalities for an integral transform of positive operators in Hilbert spaces with applications

Cubo, 2023
For a continuous and positive function $w\left( \lambda \right) ,$ $\lambda >0$ and $\mu $ a positive measure on $(0,\infty )$ we consider the following integral transform % \begin{equation*} \mathcal{D}\left( w,\mu \right) \left( T\right) :=\int_{0}^{
S. S. Dragomir
doaj   +1 more source