Results 21 to 30 of about 246 (62)

(p,q)-Generalization of Szasz-Mirakyan Operators

open access: yes, 2015
In this paper, we introduce new modifications of Szasz-Mirakyan operators based on (p,q)-integers. We first give a recurrence relation for the moments of new operators and present explicit formula for the moments and central moments up to order 4.
Acar, Tuncer
core   +1 more source

Concrete minimal 3 × 3 Hermitian matrices and some general cases

open access: yesDemonstratio Mathematica, 2017
Given a Hermitian matrix M ∈ M3(ℂ) we describe explicitly the real diagonal matrices DM such that ║M + DM║ ≤ ║M + D║ for all real diagonal matrices D ∈ M3(ℂ), where ║ · ║ denotes the operator norm.
Klobouk Abel H., Varela Alejandro
doaj   +1 more source

Vitali-type theorems for filter convergence related to vector lattice-valued modulars and applications to stochastic processes

open access: yes, 2014
A Vitali-type theorem for vector lattice-valued modulars with respect to filter convergence is proved. Some applications are given to modular convergence theorems for moment operatorsin the vector lattice setting, and also for the Brownian motion and ...
Boccuto, Antonio   +2 more
core   +1 more source

Estimates for Durrmeyer-type exponential sampling series in Mellin-Orlicz spaces

open access: yesDemonstratio Mathematica
This study examines Durrmeyer-type exponential sampling series to obtain a quantitative estimate by using the concept of the logarithmic modulus of smoothness defined with the help of a suitable modular functional on Mellin-Orlicz spaces.
Kangal Esma, Kantar Ülkü Dinlemez
doaj   +1 more source

The Breadth-one $D$-invariant Polynomial Subspace [PDF]

open access: yes, 2014
We demonstrate the equivalence of two classes of $D$-invariant polynomial subspaces introduced in [8] and [9], i.e., these two classes of subspaces are different representations of the breadth-one $D$-invariant subspace.
Jiang, Xue, Zhang, Shugong
core  

$L^p$ spaces in vector lattices and applications

open access: yes, 2016
$L^p$ spaces are investigated for vector lattice-valued functions, with respect to filter convergence. As applications, some classical inequalities are extended to the vector lattice context, and some properties of the Brownian Motion and the Brownian ...
Boccuto, Antonio   +2 more
core   +1 more source

A new kind of Durrmeyer-Stancu-type operators

open access: yesDemonstratio Mathematica
The objective of this study is to examine a class of positive linear operators, defined in terms of the bψ,kλ,μ{b}_{\psi ,k}^{\lambda ,\mu } basis and to analyze their approximation properties. Direct estimates for the (λ,μ)\left(\lambda ,\mu )-Durrmeyer-
Cai Qing-Bo   +2 more
doaj   +1 more source

Sampled forms of functional PCA in reproducing kernel Hilbert spaces

open access: yes, 2012
We consider the sampling problem for functional PCA (fPCA), where the simplest example is the case of taking time samples of the underlying functional components. More generally, we model the sampling operation as a continuous linear map from $\mathcal{H}
Amini, Arash A., Wainwright, Martin J.
core   +1 more source

Approximation of Univariate Set-Valued Functions - an Overview [PDF]

open access: yes, 2007
2000 Mathematics Subject Classification: 26E25, 41A35, 41A36, 47H04, 54C65.The paper is an updated survey of our work on the approximation of univariate set-valued functions by samples-based linear approximation operators, beyond the results reported in ...
Dyn, Nira, Farkhi, Elza, Mokhov, Alona
core  

Characterization Conditions and the Numerical Index

open access: yes, 2015
In this paper we survey some recent results concerning the numerical index $n(\cdot)$ for large classes of Banach spaces, including vector valued $\ell_p$-spaces and $\ell_p$-sums of Banach spaces where $1\leq p < \infty$.
Aksoy, Asuman Guven, Lewicki, Grzegorz
core   +1 more source

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