数学物理学报(英文版) ›› 2005, Vol. 25 ›› Issue (3): 515-524.

• 论文 • 上一篇    下一篇

TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE

吴树宏|王茂发|刘陪德   

  • 出版日期:2005-07-20 发布日期:2005-07-20
  • 基金资助:

    This research is supported by the NNSF of China
    (10401027)

TWO PROBLEMS ABOUT COMPOSITION OPERATORS ON HARDY SPACE

 TUN Shu-Hong, WANG Mao-Fa, LIU Pei-De   

  1. Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China
    School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China
  • Online:2005-07-20 Published:2005-07-20
  • Supported by:

    This research is supported by the NNSF of China
    (10401027)

摘要:

In this paper, two problems about composition operator on Hardy space are
considered. Firstly, a new estimation of the norm of a class of composition operators is
given. Secondly, the cyclic behavior of the adjoint operator of a composition operator is
discussed.

Abstract:

In this paper, two problems about composition operator on Hardy space are
considered. Firstly, a new estimation of the norm of a class of composition operators is
given. Secondly, the cyclic behavior of the adjoint operator of a composition operator is
discussed.

Key words:  Hardy space;composition operator, numerical range;cyclic vector

中图分类号: 

  • 30D45 47B38