Results 21 to 30 of about 827,039 (225)

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

Further Improved Weighted Arithmetic-Geometric Operator Mean Inequalities

Mathematics, 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

Calculation of the Hidden Symmetry Operator in PT-Symmetric Quantum Mechanics [PDF]

, 2002
In a recent paper it was shown that if a Hamiltonian H has an unbroken PT symmetry, then it also possesses a hidden symmetry represented by the linear operator C. The operator C commutes with both H and PT.
Bender C M, Bender C M, Carl M Bender, Dorey P, Dorey P, Japaridze G S, Mostafazadeh A, Mostafazadeh A, Peter N Meisinger, Qinghai Wang, Ramirez A, Trinh D T, Znojil M   +12 more
core   +2 more sources

Weighted arithmetic–geometric operator mean inequalities

Journal of Inequalities and Applications, 2018
In this paper, we refine and generalize some weighted arithmetic–geometric operator mean inequalities due to Lin (Stud. Math. 215:187–194, 2013) and Zhang (Banach J. Math. Anal. 9:166–172, 2015) as follows: Let A and B be positive operators.
Jianming Xue
doaj   +1 more source

Eventually positive semigroups of linear operators

Journal of Mathematical Analysis and Applications, 2016
We develop a systematic theory of eventually positive semigroups of linear operators mainly on spaces of continuous functions. By eventually positive we mean that for every positive initial condition the solution to the corresponding Cauchy problem is positive for large enough time.
Daniel Daners, Jochen Glück, James B. Kennedy   +2 more
openaire   +3 more sources

The Strong Approximation by Linear Positive Operator In terms of the Averaged Modulus of Order One [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2014
In this work, we introduceBernst-ein linear positive operatorsB_(n,k) (f,x) in the space of all continuous functionsC_I where I=[0,1] with some properties of this operator so to find the strongapproxi- mation of continuous functions with the averaged ...
Zainab Esa Abdul Naby
doaj   +1 more source

Moment problems for operator polynomials

, 2012
We extend Haviland's theorem on the integral representation of positive linear functionals on usual (real multivariate) polynomials to the integral representation of positive linear maps on operator polynomials mapping into the space of operators.
Aljaž Zalar, Ambrozie, Berberian, Cimprič, Cimprič, Conway, Dette, Dobrakov, Dobrakov, Dritschel, Durán, Hol, Jacobi, Jaka Cimprič, Klep, Kovalishina, Krein, Li, Marshall, Powers, Putinar, Putinar, Putinar, Riesz, Rosenblatt, Rosenblum, Schmüdgen, Schmüdgen, Schmüdgen, Vasilescu   +29 more
core   +1 more source

How to project onto extended second order cones [PDF]

, 2018
The extended second order cones were introduced by S. Z. N\'emeth and G. Zhang in [S. Z. N\'emeth and G. Zhang. Extended Lorentz cones and variational inequalities on cylinders. J. Optim.
Ferreira, O. P., Németh, S. Z.
core   +2 more sources

On an approximating linear positive operator of Cheney-Sharma

Journal of Numerical Analysis and Approximation Theory, 1997
Not available.
D. D. Stancu, C. Cismașiu
doaj   +2 more sources

New Refinement of the Operator Kantorovich Inequality

Mathematics, 2019
We focus on the improvement of operator Kantorovich type inequalities. Among the consequences, we improve the main result of the paper [H.R. Moradi, I.H. Gümüş, Z.
Hamid Reza Moradi, Shigeru Furuichi, Zahra Heydarbeygi   +2 more
doaj   +1 more source