DISCRETIZATION AND BEST APPROXIMATION IN BESOV SPACES

被引：0
|
作者：
J. M. Almira and F. Perez Acosta (Universidad de la Laguna
机构：
来源：
ApproximationTheoryandItsApplications | 1999年 / 02期
关键词：
XL; EN; DISCRETIZATION AND BEST APPROXIMATION IN BESOV SPACES;
D O I：
暂无
中图分类号：
O174 [函数论];
学科分类号：
070104 ;
摘要：
In this paper we prove a theorem about existence of best appraximantion in a class of spaces involving Besov spaces,via a discretization technique.It is a consequence of this theorem that rational functions and exponencial sums are proximinal subsets of B (φ). It is also proved the proximinality of R[a,b] in B(φ) for arbitrary p,q and α.
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页码：22 / 35
页数：14
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