Results 31 to 40 of about 28,634 (306)

Kantorovich-Schurer bivariate operators [PDF]

open access: yesMiskolc Mathematical Notes, 2004
Summary: Let \(p,q\) be two non-negative given integers. The sequence \((\tilde{K}_{m,n,p,q})_{m,n\in N}\), \(\tilde{K}_{m,n,p,q}:L_1([0,1]\times [0,1])\to C([0,1]\times[0,1])\), \[ \left(\tilde{K}_{m,n,p,q} f\right)(x,y) \] \[ = (m+p+1)(n+p+1)\times \sum\nolimits^{m+p}_{k=0}\sum\nolimits^{n+q}_{j=0} \tilde{p}_{m,k}(x)\tilde{p}_{n j}(y)\int\nolimits ...
openaire   +3 more sources

The automatic solution of partial differential equations using a global spectral method [PDF]

open access: yes, 2015
A spectral method for solving linear partial differential equations (PDEs) with variable coefficients and general boundary conditions defined on rectangular domains is described, based on separable representations of partial differential operators and ...
Olver, Sheehan, Townsend, Alex
core   +1 more source

Coagulation and fragmentation processes with evolving size and shape profiles : a semigroup approach [PDF]

open access: yes, 2013
We investigate a class of bivariate coagulation-fragmentation equations. These equations describe the evolution of a system of particles that are characterised not only by a discrete size variable but also by a shape variable which can be either discrete
A. C. McBride   +15 more
core   +1 more source

Bivariate α,q-Bernstein–Kantorovich Operators and GBS Operators of Bivariate α,q-Bernstein–Kantorovich Type [PDF]

open access: yesMathematics, 2019
In this paper, we introduce a family of bivariate α , q -Bernstein–Kantorovich operators and a family of G B S (Generalized Boolean Sum) operators of bivariate α , q -Bernstein–Kantorovich type. For the former, we obtain the estimate of moments and central moments, investigate the degree of approximation for these bivariate ...
Qing-Bo Cai   +2 more
openaire   +2 more sources

POVMs: a small but important step beyond standard quantum mechanics [PDF]

open access: yes, 2006
It is the purpose of the present contribution to demonstrate that the generalization of the concept of a quantum mechanical observable from the Hermitian operator of standard quantum mechanics to a positive operator-valued measure is not a peripheral ...
et al., xx   +4 more
core   +2 more sources

On the Degree of Ill-Posedness of Multi-Dimensional Magnetic Particle Imaging [PDF]

open access: yes, 2017
Magnetic particle imaging is an imaging modality of relatively recent origin, and it exploits the nonlinear magnetization response for reconstructing the concentration of nanoparticles.
Jin, Bangti   +2 more
core   +3 more sources

On the bivariate Shepard–Lidstone operators

open access: yesJournal of Computational and Applied Mathematics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CAIRA R   +2 more
openaire   +2 more sources

Approximation by bivariate Chlodowsky type Szász–Durrmeyer operators and associated GBS operators on weighted spaces

open access: yesJournal of Inequalities and Applications, 2022
In this article, we consider a bivariate Chlodowsky type Szász–Durrmeyer operators on weighted spaces. We obtain the rate of approximation in connection with the partial and complete modulus of continuity and also for the elements of the Lipschitz type ...
Reşat Aslan, M. Mursaleen
doaj   +1 more source

Nonlinear Bivariate Bernstein–Chlodowsky Operators of Maximum Product Type

open access: yesJournal of Mathematics, 2022
The positive nonlinear operators with maximum and product were introduced by Bede. In this study, nonlinear maximum product type of bivariate Bernstein–Chlodowsky operators is defined and the approximation properties are investigated with the help of new
Özge Özalp Güller   +2 more
doaj   +1 more source

Statistical approximation properties of Stancu type q-Baskakov-Kantorovich operators [PDF]

open access: yes, 2016
In the present paper, we consider Stancu type generalization of Baskakov-Kantorovich operators based on the q-integers and obtain statistical and weighted statistical approximation properties of these operators.
Jain, Dilip   +3 more
core   +1 more source

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