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单叶算子的(U+K)轨道闭包及Putnam定理

张敏, 纪友清   

  1. (吉林大学 数学学院, 长春 130012)
  • 收稿日期:2005-10-06 修回日期:1900-01-01 出版日期:2005-11-26 发布日期:2005-11-26
  • 通讯作者: 纪友清

(U+K)-Orbit Closure of Univalent Operator and Its Putnam Theorem

ZHANG Min, JI You-qing   

  1. (College of Mathematics, Jilin University, Changchun 130012, China)
  • Received:2005-10-06 Revised:1900-01-01 Online:2005-11-26 Published:2005-11-26
  • Contact: JI You-qing

摘要: 通过研究一类解析的Toeplitz算子, 引出单叶算子的概念, 并刻画了它的(U+K)轨道闭包, 从而给出这类算子集合的(U+K)不变量. 最后得到关于这类算子的Putnam定理.

关键词: 单叶算子, (U+K)轨道, (U+K)不变量

Abstract: A notion referring to the univalent operator was proposed via considering a class of the analytic Toeplitz operators. Then we characterized the (U+K)-orbit closure of univalent operator and gave its (U+K)-invariant. In the end we got Putnam theorem of this kind of operators.

Key words: univalent operator, (U+K)-orbit, (U+K)-invariant

中图分类号: 

  • O177.1