Results 271 to 280 of about 799,624 (312)

On differences of linear positive operators

Analysis and Mathematical Physics, 2018
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Ali Aral, Daniela Inoan, Ioan Raşa
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Inverse Linear Difference Operators

Computational Mathematics and Mathematical Physics, 2017
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Certain linear differential operators and generalized differences

Mathematical Notes of the Academy of Sciences of the USSR, 1977
The solution of the problem of finding the quantity 1 $$|\vartriangle \mathop n\nolimits_{v_k }^{\sup } | \leqslant 1 1\begin{array}{*{20}c} {1nf} \\ {(k) = 1/_k } \\ {(k = 0, \pm 1. \pm 2, ...)} \\ \end{array} || /^{(n)} (x)||_C ( - \infty ,\
Sharma, A., Cimbalario, I.
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Orthogonalities in linear spaces and difference operators

Aequationes Mathematicae, 1999
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Linear Combination of Two Composition Operators Between Different Fock Spaces

Vietnam Journal of Mathematics, 2021
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Pham Thi Lieu, Dinh Thi Thu, Pham Trong Tien   +2 more
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Difference schr�dinger operators with linear and exponential discrete spectra

Letters in Mathematical Physics, 1993
Here the authors by using the factorization method, construct finite- difference Schrödinger operators (Jacobi matrices) whose discrete spectra are composed from independent arithmetic, or geometric series. These systems originate from the periodic, or \(q\)-periodic closure of a chain of corresponding Darboux transformations. The Charlier, Krawtchouk,
Spiridonov, Vyacheslav, Vinet, Luc, Zhedanov, Alexei   +2 more
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Linear difference operators and acceleration methods

IMA Journal of Numerical Analysis, 2000
Let \(T:{\mathcal S}\to{\mathcal S}\) be an operator, where \({\mathcal S}\) is the set of all sequences of complex numbers. A numerical method for \((S_n)\in{\mathcal S}\) to calculate \(S_\infty\) is considered to satisfy the relation \(S_n\to S_\infty= a_nD_n\), where \((a_n)\) is unknown and \(D_n\neq 0\), \(n\in\mathbb{N}\), is an error estimate ...
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On the Operational Solution of Linear Finite Difference Equations

Mathematical Proceedings of the Cambridge Philosophical Society, 1931
The application of the operational method of Oliver Heaviside to the solution of linear differential equations has been fully described in a recent Cambridge Tract by Dr H. Jeffreys.
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New estimates for the differences of positive linear operators

Numerical Algorithms, 2016
Some inequalities established for a positive linear functional allow to obtain new estimations for differences of certain positive linear operators. Applications for some known positive linear operators are also given.
Acu, Ana Maria, Raşa, Ioan
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Projection-difference method for a linear operator-differential equation

Differential Equations, 2007
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Vinogradova, P. V., Zarubin, A. G.
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