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Growth and Lδ-approximation of solutions of the Helmholtz equation in a finite disk

  • Devendra Kumar EMAIL logo and Anindita Basu
Published/Copyright: October 14, 2014

Abstract

In this paper we study the growth and Lδ-approximation, 1 ≤ δ ≤ ∞, of solutions (not necessarily entire) of Helmholtz-type equations. Moreover, we obtain the characterization of order and type of HHR, 0 < R < ∞, in terms of decay of approximation errors En(H,R0) and En,δi(H,R0), i = 1,2. Our results extend and improve the results obtained by McCoy [J. Approx. Theory 25 (1979), 153–168].

MSC: 41A05; 31B05

The authors are very much thankful to the referees for giving fruitful comments to improve the paper.

Received: 2013-1-14
Revised: 2013-3-3
Accepted: 2013-11-21
Published Online: 2014-10-14
Published in Print: 2014-12-1

© 2014 by De Gruyter

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