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Polynomial approximation to a piecewise analytic function on touching domains

 

作者: V.V. Andrievskii,  

 

期刊: Complex Variables, Theory and Application: An International Journal  （Taylor Available online 1996）
卷期: Volume 31, issue 4  

页码: 325-344

 

ISSN:0278-1077

 

年代: 1996

 

DOI:10.1080/17476939608814971

 

出版商: Gordon and Breach Science Publishers

 

关键词: Polynomial approximation;modulus function;de la Vallée Poussin problem;touching domains;30D40;41A10

 

数据来源: Taylor

 

摘要:

We give a geometric description of contmuaKin the complex plane consisting of two closed Jordan domains touching at the origin with the following property: The uniform polynomial approximation onKto a complex extension of the modulus functions has the same other as in the case of the unit interval [-1 1]of the real axis.

 

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