Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Sergio Favier"'
Autor:
Sergio Favier, Felipe Zò
Publikováno v:
Abstract and Applied Analysis, Vol 6, Iss 2, Pp 101-114 (2001)
We consider an extension of the best approximation operator from an Orlicz space L φ to the space L φ′, where φ′ denotes the derivative of φ, and we prove a weak-type inequality in this space. Further, we obtain some strong inequalities for s
Externí odkaz:
https://doaj.org/article/998ba74c59f04e9b97440a76b1fd4408
Publikováno v:
Abstract and Applied Analysis, Vol 2008 (2008)
Externí odkaz:
https://doaj.org/article/897e3c6c889f49d580de53476aca763c
Publikováno v:
Acta Mathematica Sinica, English Series. 35:185-203
In this paper we pursue the study of the best approximation operator extended from L^Φ to L^φ, where φ denotes the derivative of the function Φ. We get pointwise convergence for the coefficients of the extended best approximation polynomials for
Autor:
Sonia Ester Acinas, Sergio Favier
Publikováno v:
Analysis in Theory and Applications. 33:253-266
Fil: Acinas, Sonia Ester. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - San Luis. Instituto de Matematica Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ci
Autor:
Sonia Ester Acinas, Sergio Favier
Publikováno v:
Numerical Functional Analysis and Optimization. 37:1339-1353
In this article, we consider the best multivalued polynomial approximation operator, defined in an Orlicz Space LΦ(B), and its extension to Lφ(B), where φ is the derivative of Φ which is not an N-function. Thus, the extension of the best polynomi
In this article we consider the best polynomial approximation operator, defined in an Orlicz space L Φ(B), and its extension to L ϕ(B) where ϕ is the derivative function of Φ. A characterization of these operators and several properties are obtai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::060ef2a6bf3c1f106742af17a6bd3b59
http://www.tandfonline.com/doi/full/10.1080/01630563.2015.1040161
http://www.tandfonline.com/doi/full/10.1080/01630563.2015.1040161
Autor:
Ivana Carrizo, Sergio Favier
Publikováno v:
Analysis in Theory and Applications. 19:238-254
In this work two aspects of theory of frames are presented: a side necessary condition on irregular wavelet frames is obtained, another perturbation of wavelet and Gabor frames is considered. Specifically, we present the results obtained on frame sta
Autor:
Felipe Zó, Sergio Favier
Publikováno v:
Abstract and Applied Analysis, Vol 6, Iss 2, Pp 101-114 (2001)
Abstr. Appl. Anal. 6, no. 2 (2001), 101-114
Abstr. Appl. Anal. 6, no. 2 (2001), 101-114
We consider an extension of the best approximation operator from an Orlicz spaceL φto the spaceL φ′, whereφ′denotes the derivative ofφ, and we prove a weak-type inequality in this space. Further, we obtain some strong inequalities for suitabl
Publikováno v:
Approximation Theory and Its Applications. 17:90-101
Given g∈L 2(R n ), we consider irregular wavelet for the form $$\left\{ {\lambda ^{\frac{n}{2}} g\left( {\lambda _j x - kb} \right)} \right\}_{j\varepsilon zj\varepsilon z^n } ,where\;\lambda _j $$ > 0 and b > 0. Sufficient conditions for the wavel
Autor:
Sergio Favier, Felipe Zó
Publikováno v:
Numerical Functional Analysis and Optimization. 16:825-834
Suppose V is a subspace of R n and assume that ‖∞-norm is obtained as a suitable limit of convex functions {π m }. Let x m be a best π m -approximation to x by elements of V. We prove that the sequence x m converges to the strict best approxima