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文章基本信息

  • 标题:Compact Hermitian operators on projective tensor products of Banach algebras
  • 本地全文:下载
  • 作者:T. K. Dutta ; H. K. Nath ; H. K. Sarmah
  • 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:2002
  • 卷号:29
  • 期号:3
  • 页码:167-178
  • DOI:10.1155/S0161171202004659
  • 出版社:Hindawi Publishing Corporation
  • 摘要:

    Let U and V be, respectively, an infinite- and a finite-dimensional complex Banach algebras, and let U ⊗ p V be their projective tensor product. We prove that (i) every compact Hermitian operator T 1 on U gives rise to a compact Hermitian operator T on U ⊗ p V having the properties that ‖ T 1 ‖ = ‖ T ‖ and sp ( T 1 ) = sp ( T ) ; (ii) if U and V are separable and U has Hermitian approximation property ( HAP ) , then U ⊗ p V is also separable and has HAP ; (iii) every compact analytic semigroup ( CAS ) on U induces the existence of a CAS on U ⊗ p V having some nice properties. In addition, the converse of the above results are discussed and some open problems are posed.

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