Order of approximation for nonlinear sampling Kantorovich operators in Orlicz spaces

• Autorzy: Costarelli D. , Vinti G.

Identyfikatory

DOI

10.14708/cm.v53i2.792

• Języki publikacji: EN

Abstrakty

EN

In this paper, we study the rate of approximation for the nonlinear sampling Kantorovich operators. We consider the case of uniformly continuous and bounded functions belonging to Lipschitz classes of the Zygmund-type, as well as the case of functions in Orlicz spaces. We estimate the aliasing errors with respect to the uniform norm and to the modular functional of the Orlicz spaces, respectively. The general setting of Orlicz spaces allows to deduce directly the results concerning the rate of convergence in L^p-spaces, 1 ≤ p < ∞, very useful in the applications to Signal Processing. Others examples of Orlicz spaces as interpolation spaces and exponential spaces are discussed and the particular cases of the nonlinear sampling Kantorovich series constructed using Fejér and B-spline kernels are also considered.

Słowa kluczowe

EN

Nonlinear sampling Kantorovich operators; Orlicz spaces; order of approximation; Lipschitz classes; irregular sampling

• Wydawca: Polskie Towarzystwo Matematyczne
• Czasopismo: Commentationes Mathematicae
• Rocznik: 2013
• Tom: Vol. 53, No. 2
• Strony: 171--192
• Opis fizyczny: Bibliogr. 58 poz.

Twórcy

autor

Costarelli D.

• Department of Mathematics and Physics, Section of Mathematics, University of Roma, Tre, Largo S. Leonardo Murialdo, 1, 00146 Rome, Italy

autor

Vinti G.

• Department of Mathematics and Computer Sciences, University of Perugia, Via Vanvitelli, 1, 06123 Perugia, Italy

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