数学物理学报

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半平面中解析函数的积分表示及在逼近中的应用

杨向东1; 邓冠铁2   

  1. (1. 昆明理工大学数学系 昆明 650093; 2.北京师范大学数学科学学院 数学与复杂系统教育部重点实验室 北京 100875)
  • 收稿日期:2006-12-01 修回日期:2008-03-01 出版日期:2008-12-25 发布日期:2008-12-25
  • 通讯作者: 邓冠铁
  • 基金资助:
    昆明理工大学人才引进项目(14118029)资助

Integral Representation of Functions Analytic in the Right Half Plane and Applications in Approximation

Yang Xiangdong1;Deng Guantie2   

  1. (1.Department of Mathematics, Kunming University of Techonology, Kunming 650093;2.School of Mathematics Sciences, Key Laboratory of Mathematics and Complex Systems of Ministry of Education, Beijing Normal University, Beijing 100875)
  • Received:2006-12-01 Revised:2008-03-01 Online:2008-12-25 Published:2008-12-25
  • Contact: Deng Guantie

摘要: 在该文中, 作者证明了满足一定增长性条件的右半平面上的解析函数可以由它在边界上的积分和其加权Blaschke乘积的和表示, 作为应用, 作者还考虑了指数多项式在实数轴上加权 Banach 空间Cα 中的完备性.

关键词: 解析函数, Blaschke 乘积, 积分表示, 完备性

Abstract: In this paper, we prove that analytic functions in the right half plane with some restricted growth can be represented by a sum of its weighted Blaschke product and its integral on the boundary of the half plane. As its applications, we also investigate the completeness of complex exponential polynomials in
Cα, where Cα is a weighted Banach space of complex continuous functions f on the real axis R with f(t)exp(-α(t)) vanishing at infinity, in the uniform norm with respect to the weight α(t).

Key words: Analytic functions, Blaschke product, Integral representation, Completeness

中图分类号: 

  • 30E20