Simultaneous approximation and interpolation of functions on continua in the complex plane

Citation
Vv. Andrievskii et al., Simultaneous approximation and interpolation of functions on continua in the complex plane, J MATH P A, 80(4), 2001, pp. 373-388
Citations number
38
Categorie Soggetti
Mathematics
Journal title
JOURNAL DE MATHEMATIQUES PURES ET APPLIQUEES
ISSN journal
00217824 → ACNP
Volume
80
Issue
4
Year of publication
2001
Pages
373 - 388
Database
ISI
SICI code
0021-7824(200105)80:4<373:SAAIOF>2.0.ZU;2-E
Abstract
We construct polynomial approximations of Dzjadyk type (in terms of the k-t h modulus of continuity, k greater than or equal to 1) for analytic functio ns defined on a continuum E in the complex plane, which simultaneously inte rpolate at given points of E. Furthermore, the error in this approximation is decaying e(-cn alpha) strictly inside E, where c and alpha are positive constants independent of the degree n of the as e approximating polynomial. (C) 2001 Editions scientifiques et medicales Elsevier SAS.