Results 21 to 30 of about 830,215 (273)

Summation process of positive linear operators

Computers & Mathematics with Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Özlem G. Atlihan, Cihan Orhan
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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

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
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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
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On an approximating linear positive operator of Cheney-Sharma

Journal of Numerical Analysis and Approximation Theory, 1997
Not available.
D. D. Stancu, C. Cismașiu
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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
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Calculation of the Hidden Symmetry Operator for a $\cP\cT$-Symmetric Square Well

, 2006
It has been shown that a Hamiltonian with an unbroken $\cP\cT$ symmetry also possesses a hidden symmetry that is represented by the linear operator $\cC$.
Barnabas Tan, Bender C M, Bender C M, Carl M Bender, Dorey P, Dorey P, Mostafazadeh A, Mostafazadeh A, Znojil M   +8 more
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Theorems of Second Korovkin Type with respect to Triangular $A$-Statistical Convergence

Universal Journal of Mathematics and Applications, 2023
This article is a continuation of our previous works. We mainly investigate a Korovkin type theorem for double sequences of positive linear operators defined in the space of all $2\pi $-periodic and real valued continuous functions on the real two ...
Selin Çınar
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Extreme Positive Linear Operators.

MATHEMATICA SCANDINAVICA, 1969
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Sector operator inequalities involving positive linear maps

Journal of Inequalities and Applications
In this note, we prove the pth power ( p ≥ 2 $p\geq 2$ ) of two new sector operator inequalities for positive linear maps which are due to Bedrani et al. (Positivity 25:1601-1629, 2021) and Nasiri (Filomat 38:3429-3438, 2024), respectively.
Jiqin Chen, Xiaohui Fu, Qi Song, Chuchu Tang   +3 more
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