On the comparison of trigonometric convolution operators with their discrete analogues for Riemann integrable functions

<p/> <p>This note is concerned with a comparison of the approximation-theoretical behaviour of trigonometric convolution processes and their discrete analogues. To be more specific, for continuous functions it is a well-known fact that under suitable conditions the relevant uniform error...

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Bibliographic Details
Main Authors: Nessel RJ, R&#246;psch C
Format: Article
Language:English
Published: SpringerOpen 1998-01-01
Series:Journal of Inequalities and Applications
Subjects:
Online Access:http://www.journalofinequalitiesandapplications.com/content/2/843820
Description
Summary:<p/> <p>This note is concerned with a comparison of the approximation-theoretical behaviour of trigonometric convolution processes and their discrete analogues. To be more specific, for continuous functions it is a well-known fact that under suitable conditions the relevant uniform errors are indeed equivalent, apart from constants. It is the purpose of this note to extend the matter to the frame of Riemann integrable functions. To establish the comparison for the corresponding Riemann errors, essential use is made of appropriate stability inequalities.</p>
ISSN:1025-5834
1029-242X