Results 11 to 20 of about 584,520 (201)

Composition and Decomposition of Positive Linear Operators (VIII)

open access: yesAxioms, 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   +2 more
doaj   +1 more source

Differences of Positive Linear Operators on Simplices

open access: yesJournal 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   +2 more
doaj   +1 more source

Resolvent Positive Linear Operators Exhibit the Reduction Phenomenon [PDF]

open access: yes, 2011
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.
Cantrell   +15 more
core   +3 more sources

Tensor Products, Positive Linear Operators, and Delay-Differential Equations [PDF]

open access: yes, 2012
We develop the theory of compound functional differential equations, which are tensor and exterior products of linear functional differential equations. Of particular interest is the equation $\dot x(t)=-\alpha(t)x(t)-\beta(t)x(t-1)$ with a single delay,
Mallet-Paret, John, Nussbaum, Roger D.
core   +1 more source

On Pompeiu-Cebysev type inequalities for positive linear maps of selfadjoint operators in inner product spaces [PDF]

open access: yes, 2018
In this work, generalizations of some inequalities for continuous $h$-synchronous ($h$-asynchronous) functions of linear bounded selfadjoint operators under positive linear maps in Hilbert spaces are proved.Comment: 12 pages.
Alomari, Mohammad W.
core   +3 more sources

An analysis of the induced linear operators associated to divide and color models [PDF]

open access: yes, 2020
We study the natural linear operators associated to divide and color (DC) models. The degree of nonuniqueness of the random partition yielding a DC model is directly related to the dimension of the kernel of these linear operators.
Forsström, Malin Palö   +1 more
core   +2 more sources

Dobrushin ergodicity coefficient for Markov operators on cones, and beyond [PDF]

open access: yes, 2013
The analysis of classical consensus algorithms relies on contraction properties of adjoints of Markov operators, with respect to Hilbert's projective metric or to a related family of seminorms (Hopf's oscillation or Hilbert's seminorm).
Gaubert, Stéphane, Qu, Zheng
core   +7 more sources

Hermite-Hadamard type inequalities for operator geometrically convex functions [PDF]

open access: yes, 2015
In this paper, we introduce the concept of operator geometrically convex functions for positive linear operators and prove some Hermite-Hadamard type inequalities for these functions. As applications, we obtain trace inequalities for operators which give
Darvish, Vahid   +3 more
core   +2 more sources

Completely positive linear operators for Banach spaces

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
Using ideas of Pisier, the concept of complete positivity is generalized in a different direction in this paper, where the Hilbert space ℋ is replaced with a Banach space and its conjugate linear dual.
Mingze Yang
doaj   +1 more source

Approximation by positive linear operators

open access: yesJournal of Numerical Analysis and Approximation Theory, 1995
Not available.
Ioan Gavrea
doaj   +2 more sources

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