Results 51 to 60 of about 349,949 (184)

On Ozeki's inequality

open access: yesJournal of Inequalities and Applications, 1998
We shall obtain the best bound in Ozeki's inequality which estimates the difference of Cauchy's inequality. We also give an operator version of Ozeki's inequality which extends an inequality on the variance of an operator.
Mori Hideo, Seo Yuki, Izumino Saichi
doaj  

Variational-Like Inequality Problem Involving Generalized Cayley Operator

open access: yesAxioms, 2021
This article deals with the study of a variational-like inequality problem which involves the generalized Cayley operator. We compare our problem with a fixed point equation, and based on it we construct an iterative algorithm to obtain the solution of ...
Zahoor Ahmad Rather   +2 more
doaj   +1 more source

New stochastic fractional integral and related inequalities of Jensen–Mercer and Hermite–Hadamard–Mercer type for convex stochastic processes

open access: yesJournal of Inequalities and Applications, 2023
In this investigation, we unfold the Jensen–Mercer ( J − M $\mathtt{J-M}$ ) inequality for convex stochastic processes via a new fractional integral operator.
Fahd Jarad   +5 more
doaj   +1 more source

An Operator Extension of Čebyšev Inequality

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
Some operator inequalities for synchronous functions that are related to the čebyšev inequality are given. Among other inequalities for synchronous functions it is shown that ∥ø(f(A)g(A)) - ø(f(A))ø(g(A))∥ ≤ max{║ø(f2(A)) - ø2(f(A))║, ║ø)G2(A)) - ø2(g(A))
Moradi Hamid Reza   +2 more
doaj   +1 more source

Geometric operator inequalities

open access: yesLinear Algebra and its Applications, 1997
In a given \(C^*\)-algebra there are several interesting subsets (e.g., the set of idempotent elements, the set of selfadjoint invertible elements, the set of nilpotent elements of a given order, the similarity and unitary orbits of elements etc.) that have a differentiable structure and in which the length of curves is measured by means of a Finsler ...
Andruchow, E., Corach, G., Stojanoff, D.
openaire   +2 more sources

Nash type inequalities for fractional powers of non-negative self-adjoint operators

open access: yes, 2004
Assuming that a Nash type inequality is satisfied by a non-negative self-adjoint operator $A$, we prove a Nash type inequality for the fractional powers $A^{\alpha}$ of $A$. Under some assumptions, we give ultracontractivity bounds for the semigroup $(T_{
Bendikov, Alexander, Maheux, Patrick
core   +2 more sources

Jensen’s inequality for operators without operator convexity

open access: yesLinear Algebra and its Applications, 2011
We give Jensen's inequality for n-tuples of self-adjoint operators, unital n-tuples of positive linear mappings and real valued continuous convex functions with conditions on the bounds of the operators. We also study operator quasi-arithmetic means under the same conditions.
Pavić, Zlatko   +2 more
openaire   +3 more sources

Matrix Hermite-Hadamard type inequalities [PDF]

open access: yes, 2013
We present several matrix and operator inequalities of Hermite-Hadamard type. We first establish a majorization version for monotone convex functions on matrices. We then utilize the Mond-Pecaric method to get an operator version for convex functions. We
Moslehian, Mohammad Sal
core  

On a New Hilbert-Hardy-Type Integral Operator and Applications

open access: yesJournal of Inequalities and Applications, 2010
By applying the way of weight functions and a Hardy's integral inequality, a Hilbert-Hardy-type integral operator is defined, and the norm of operator is obtained.
Yang Bicheng, Liu Xingdong
doaj  

Multigrid method for noncoercive parabolic variational inequality

open access: yesJournal of Inequalities and Applications
In this article, our work is focused on the proof of the uniform convergence of the multigrid method for parabolic variational inequality with a noncoercive operator and its numerical solution.
Mostafa Bahi   +3 more
doaj   +1 more source

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