首页    期刊浏览 2024年11月28日 星期四
登录注册

文章基本信息

  • 标题:M -quasi-hyponormal composition operators
  • 本地全文:下载
  • 作者:Pushpa R. Suri ; N. Singh
  • 期刊名称:International Journal of Mathematics and Mathematical Sciences
  • 印刷版ISSN:0161-1712
  • 电子版ISSN:1687-0425
  • 出版年度:1987
  • 卷号:10
  • 期号:3
  • 页码:621-623
  • DOI:10.1155/S0161171287000760
  • 出版社:Hindawi Publishing Corporation
  • 摘要:

    A necessary and sufficient condition is obtained for M -quasi-hyponormal composition operators. It has also been proved that the class of M -quasi-hyponormal composition operators coincides with the class of M -paranormal composition operators. Existence of M -hyponormal composition operators which are not hyponormal; and M -quasihyponormal composition operators which are not M -hyponormal and quasi-hyponormal are also shown.

  • 关键词:M-hyponormal; M-quasi-hyponormal; M-paranormal; normal; composition operators.
国家哲学社会科学文献中心版权所有