Title
Lp-convergence of Fourier sums with exponential weights on (-1, 1).
Abstract
In order to approximate functions defined on (−1,1) and having exponential singularities at the endpoints of the interval, we study the behavior of some modified Fourier Sums in an orthonormal system related to exponential weights. We give necessary and sufficient conditions for the boundedness of the related operators in suitable weighted Lp-spaces, with 1<p<∞. Then, in these spaces, these processes converge with the order of the best polynomial approximation.
Year
DOI
Venue
2011
10.1016/j.jat.2011.02.003
Journal of Approximation Theory
Keywords
DocType
Volume
Orthogonal polynomials,Fourier series,Approximation by polynomials,Exponential weights
Journal
163
Issue
ISSN
Citations 
5
0021-9045
1
PageRank 
References 
Authors
0.43
0
2
Name
Order
Citations
PageRank
Giuseppe Mastroianni13510.38
I. Notarangelo242.44