数学物理学报

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两个l-空间单位球面间非满等距算子的讨论及其应用

刘锐   

  1. 南开大学数学科学学院, 天津 300071
  • 收稿日期:2005-11-08 修回日期:2006-09-16 出版日期:2007-06-25 发布日期:2007-06-25
  • 通讯作者: 刘锐
  • 基金资助:
    国家自然科学基金(10571090)及教育部博士点基金(20060055010)资助

The Discussion and Application of the Non-surjective Isometries between the Unit Spheres of Two l-spaces

Liu Rui   

  1. Department of Mathematics, Nankai University, Tianjin 300071
  • Received:2005-11-08 Revised:2006-09-16 Online:2007-06-25 Published:2007-06-25
  • Contact: Liu Rui

摘要: 该文给出了单位球面间等距算子在非满情况下的一些性质, 以及在这种情况下算子值域空间的一些结构特征, 并由此得出从c0(Gamma)到l-空间单位球面之间非满等距算子能够延拓的充要条件.

关键词: 等距算子, 等距延拓

Abstract: In this paper, the author gives some properties of non-surjective isometries
between the unit spheres of two l-spaces, and discribes the characters of the range set in this condition. At the end, the author answers the question when the non-surjective isometries between the unit spheres of c0(\Gamma)$ and l-space can be extended to a linear isometry on the whole space.

Key words: Isometric operator, Extension of isometries

中图分类号: 

  • 46B04