The Nevanlinna-Pick interpolation problem in multiply connected domains

被引:0
作者
Vinnikov V.L. [1 ]
Fedorov S.I. [2 ]
机构
[1] Department of Theoretical mathematics, Weizmann Institute, Pexobot
[2] Department of Mathematics, University of Auckland, Auckland
关键词
Hardy Space; Connect Domain; Positive Semidefinite; Interpolation Problem; Planar Domain;
D O I
10.1023/A:1011368822699
中图分类号
学科分类号
摘要
We simplify and strengthen Abrahamse's result on the Nevanlinna-Pick interpolation problem in a finitely connected planar domain, according to which the problem has a solution if and only if the Pick matrices associated with character-automorphic Hardy spaces are positive semidefinite for all characters in ℝn-1/ℤn-1, where n is the connectivity of the domain. The main aim of the paper is to reduce the indicated procedure (verification of the positive semidefiniteness) for the entire real (n-1)-torus ℝn-1/ℤn-1 to a part of it, whose dimension is, possibly, less than n-1. ©2001 Plenum Publishing Corporation.
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页码:2109 / 2126
页数:17
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