Results 21 to 30 of about 307,599 (226)

Linear operators that preserve some test functions

International Journal of Mathematics and Mathematical Sciences, 2006
The paper centers around a pair of sequences of linear positive operators. The former has the degree of exactness one and the latter has its degree of exactness null, but, as a novelty, it reproduces the third test function of Korovkin theorem ...
Octavian Agratini
doaj   +1 more source

Approximation degree of Durrmeyer–Bézier type operators

Journal of Inequalities and Applications, 2018
Recently, a mixed hybrid operator, generalizing the well-known Phillips operators and Baskakov–Szász type operators, was introduced. In this paper, we study Bézier variant of these new operators.
Purshottam N. Agrawal, Serkan Araci, Martin Bohner, Kumari Lipi   +3 more
doaj   +1 more source

Dunkl analogue of Szász-mirakjan operators of blending type

Open Mathematics, 2018
In the present work, we construct a Dunkl generalization of the modified Szász-Mirakjan operators of integral form defined by Pǎltanea [1]. We study the approximation properties of these operators including weighted Korovkin theorem, the rate of ...
Deshwal Sheetal, Agrawal P.N., Araci Serkan   +2 more
doaj   +1 more source

A new kind of Bernstein-Schurer-Stancu-Kantorovich-type operators based on q-integers

Journal of Inequalities and Applications, 2017
Agrawal et al. (Boll. Unione Mat. Ital. 8:169-180, 2015) introduced a Stancu-type Kantorovich modification of the operators proposed by Ren and Zeng (Bull. Korean Math. Soc.
Ruchi Chauhan, Nurhayat Ispir, PN Agrawal   +2 more
doaj   +1 more source

High-Order AFEM for the Laplace-Beltrami Operator: Convergence Rates [PDF]

, 2016
We present a new AFEM for the Laplace-Beltrami operator with arbitrary polynomial degree on parametric surfaces, which are globally $W^1_\infty$ and piecewise in a suitable Besov class embedded in $C^{1,\alpha}$ with $\alpha \in (0,1]$.
Bonito, Andrea, Cascón, J. Manuel, Mekchay, Khamron, Morin, Pedro, Nochetto, Ricardo H.   +4 more
core   +4 more sources

Response operators for Markov processes in a finite state space: radius of convergence and link to the response theory for Axiom A systems [PDF]

, 2015
Using straightforward linear algebra we derive response operators describing the impact of small perturbations to finite state Markov processes. The results can be used for studying empirically constructed—e.g.
A Seneta, A Tantet, C Bonatti, C Liverani, C Liverani, CH Reick, D Ruelle, D Ruelle, D Ruelle, D Ruelle, E Seneta, EN Lorenz, F Ginelli, G Froyland, G Froyland, G Froyland, G Froyland, G Gallavotti, G Gallavotti, G Gallavotti, G Gallavotti, GL Eyink, ICF Ipsen, Intergovernmental Panel on Climate Change [Eds.: T. Stocker et al.]. Climate Change, J Ding, JP Eckmann, K-J Engel, M Blank, M Dellnitz, MD Chekroun, O Butterley, P Gaspard, PF Hoffman, PJ Schweitzer, Qiqi Wang, R Kubo, RT Pierrehumbert, RV Abramov, RV Abramov, S Corti, V Baladi, V Lucarini, V Lucarini, V Lucarini, V Lucarini, V Lucarini, V Lucarini, Valerio Lucarini, Viviane Baladi, W Tucker   +49 more
core   +2 more sources

On the rate of convergence of Baskakov-Kantorovich-Bézier operators for bounded variation functions

Journal of Numerical Analysis and Approximation Theory, 2002
In the present paper we introduce Baskakov-Kantorovich-Bézier operators and study their rate of convergence for functions of bounded variation.
Ulrich Abel, Vijay Gupta, Mircea Ivan
doaj   +2 more sources

The Virtual Element Method with curved edges

, 2018
In this paper we initiate the investigation of Virtual Elements with curved faces. We consider the case of a fixed curved boundary in two dimensions, as it happens in the approximation of problems posed on a curved domain or with a curved interface ...
da Veiga, L. Beirão, Russo, A., Vacca, G.   +2 more
core   +1 more source

Rate of convergence of Stancu beta operators for functions of bounded variation

Journal of Numerical Analysis and Approximation Theory, 2004
In this paper we study beta operators of second kind recently introduced by Prof. D. D. Stancu. We obtain an estimate on the rate of convergence for functions of bounded variation by means of the decomposition technique.
Ulrich Abel, Vijay Gupta
doaj   +2 more sources

On the convergence rates of Gauss and Clenshaw-Curtis quadrature for functions of limited regularity [PDF]

, 2012
We study the optimal general rate of convergence of the n-point quadrature rules of Gauss and Clenshaw-Curtis when applied to functions of limited regularity: if the Chebyshev coefficients decay at a rate O(n^{-s-1}) for some s > 0, Clenshaw-Curtis and ...
Bornemann, Folkmar, Xiang, Shuhuang
core   +2 more sources