Results 1 to 10 of about 587,057 (164)

Resolvent positive linear operators exhibit the reduction phenomenon. [PDF]

Proc Natl Acad Sci U S A, 2012
The spectral bound, s(a A + b V), of a combination of a resolvent positive linear operator A and an operator of multiplication V, was shown by Kato to be convex in b \in R.
Altenberg L.
europepmc   +5 more sources

Differences of Positive Linear Operators on Simplices [PDF]

Journal of Function Spaces, 2021
The aim of the paper is twofold: we introduce new positive linear operators acting on continuous functions defined on a simplex and then estimate differences involving them and/or other known operators.
Ana-Maria Acu, Gülen Başcanbaz-Tunca, Ioan Rasa   +2 more
doaj   +2 more sources

Weighted A-Statistical Convergence for Sequences of Positive Linear Operators [PDF]

The Scientific World Journal, 2014
We introduce the notion of weighted A-statistical convergence of a sequence, where A represents the nonnegative regular matrix. We also prove the Korovkin approximation theorem by using the notion of weighted A-statistical convergence. Further, we give a
S. A. Mohiuddine, Abdullah Alotaibi, Bipan Hazarika   +2 more
doaj   +2 more sources

On the iterates of positive linear operators

Journal of Approximation Theory, 2011
Let \(U\) be a positive linear operator on \(C[0,1]\) that leaves the linear functions, \(P^1\), invariant. The paper presents a simple short proof of the following: Theorem: If there is a continuous function \(f\) such that \(Uf-f\) has no zeros in \((1,0)\) then \(U^k g\) converges to the projection onto \(P^1\) that interpolates to \(g\) at \(0 ...
Ioan Gavrea, Mircea Ivan
exaly   +3 more sources

Summation process of positive linear operators

Computers and Mathematics With Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
C Orhan
exaly   +3 more sources

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
exaly   +4 more sources

Estimates for the Differences of Certain Positive Linear Operators

Mathematics, 2020
The present paper deals with estimates for differences of certain positive linear operators defined on bounded or unbounded intervals. Our approach involves Baskakov type operators, the kth order Kantorovich modification of the Baskakov operators, the ...
Ana Maria Acu, Sever Hodiş, Ioan Rașa
doaj   +3 more sources

Approximation by positive linear operators

Journal of Numerical Analysis and Approximation Theory, 1995
Not available.
Ioan Gavrea
doaj   +4 more sources

A sequence of positive linear operators

Journal of Numerical Analysis and Approximation Theory, 1995
Not available.
M. Ivan, I. Rașa
doaj   +4 more sources

Composition and Decomposition of Positive Linear Operators (VIII)

Axioms, 2023
In a series of papers, most of them authored or co-authored by H. Gonska, several authors investigated problems concerning the composition and decomposition of positive linear operators defined on spaces of functions.
Ana Maria Acu, Ioan Raşa, Andra Seserman   +2 more
doaj   +1 more source