Results 31 to 40 of about 160,977 (322)

PIETOOLS: A Matlab Toolbox for Manipulation and Optimization of Partial Integral Operators

, 2020
In this paper, we present PIETOOLS, a MATLAB toolbox for the construction and handling of Partial Integral (PI) operators. The toolbox introduces a new class of MATLAB object, opvar, for which standard MATLAB matrix operation syntax (e.g.
bergman, das, gohberg, papachristodoulou, peet, shivakumar   +5 more
core   +1 more source

Entropy dissipation estimates for the linear Boltzmann operator [PDF]

, 2015
We prove a linear inequality between the entropy and entropy dissipation functionals for the linear Boltzmann operator (with a Maxwellian equilibrium background).
Bisi, Marzia, Cañizo, José A., Lods, Bertrand   +2 more
core   +1 more source

On weighted means and their inequalities

Journal of Inequalities and Applications, 2021
In (Pal et al. in Linear Multilinear Algebra 64(12):2463–2473, 2016), Pal et al. introduced some weighted means and gave some related inequalities by using an approach for operator monotone functions.
Mustapha Raïssouli, Shigeru Furuichi
doaj   +1 more source

Lyapunov-type Inequalities for Partial Differential Equations [PDF]

, 2013
In this work we present a Lyapunov inequality for linear and quasilinear elliptic differential operators in $N-$dimensional domains $\Omega$. We also consider singular and degenerate elliptic problems with $A_p$ coefficients involving the $p-$Laplace ...
Juan P. Pinasco, Napoli, Pablo L. De
core   +2 more sources

Numerical analysis of doubly-history dependent variational inequalities in contact mechanics

Fixed Point Theory and Algorithms for Sciences and Engineering, 2021
This paper is devoted to numerical analysis of doubly-history dependent variational inequalities in contact mechanics. A fully discrete method is introduced for the variational inequalities, in which the doubly-history dependent operator is approximated ...
Wei Xu, Cheng Wang, Mingyan He, Wenbin Chen, Weimin Han, Ziping Huang   +5 more
doaj   +1 more source

Exponential Inequalities for Positive Linear Mappings

Journal of Function Spaces, 2018
In this article, we present exponential-type inequalities for positive linear mappings and Hilbert space operators, by means of convexity and the Mond-Pečarić method. The obtained results refine and generalize some known results.
Mohammad Sababheh, Hamid Reza Moradi, Shigeru Furuichi   +2 more
doaj   +1 more source

On the Landau-Kolmogorov inequality between $\| f' \|_{\infty}$, $\| f \|_{\infty}$ and $\| f''' \|_1$

Researches in Mathematics, 2019
We solve the Landau-Kolmogorov problem on finding sharp additive inequalities that estimate $\| f' \|_{\infty}$ in terms of $\| f \|_{\infty}$ and $\| f''' \|_1$.
D. Skorokhodov
doaj   +1 more source

Operator upper bounds for Davis-Choi-Jensen's difference in Hilbert spaces [PDF]

Mathematica Moravica
In this paper we obtain several operator inequalities providing upper bounds for the Davis-Choi-Jensen's Difference Ph (f (A)) - f (Ph (A)) for any convex function f : I → R, any selfadjoint operator A in H with the spectrum Sp (A) ⊂ I and any linear ...
Dragomir Silvestru Sever
doaj   +1 more source

Weighted norm inequalities for polynomial expansions associated to some measures with mass points

, 1995
Fourier series in orthogonal polynomials with respect to a measure $\nu$ on $[-1,1]$ are studied when $\nu$ is a linear combination of a generalized Jacobi weight and finitely many Dirac deltas in $[-1,1]$.
A. M. Krall, A. Máté, B. Muckenhoupt, B. Muckenhoupt, B. Muckenhoupt, C. E. Kenig, C. Segovia, C. Segovia, C. Segovia, E. A. Rahmanov, E. Laeng, E. M. Stein, F. J. Ruiz, F. V. Atkinson, G. Szegõ, H. Pollard, J. García-Cuerva, J. García-Cuerva, J. J. Guadalupe, J. J. Guadalupe, J. J. Guadalupe, J. J. Guadalupe, J. L. Varona, J.E. Gilbert, J.J. Guadalupe, J.J. Guadalupe, L. Colzani, L. L. Littlejohn, M. Pérez, R. Askey, R.R. Coifman, R.R. Coifman, S. Bloom, S. Chanillo, T. Koornwinder, T. S. Chihara, V. M. Badkov   +36 more
core   +2 more sources

On operator inequalities and linear combinations of operators

Linear Algebra and its Applications, 1991
Given bounded linear operators \(A_1,\dots, A_k\), \(C\), and \(P\) on a Hilbert space, the author gives necessary and sufficient conditions for operator inequalities of type \(A_1 PA^*_1+\cdots A_k PA^*_k\geq CPC^*\) with \(P\geq 0\).
openaire   +3 more sources