On stability of index of Fredholm complexes on the C*-algebra


Bayramov S.

APPLICABLE ANALYSIS, cilt.87, ss.409-419, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 87 Konu: 4
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1080/00036810701822306
  • Dergi Adı: APPLICABLE ANALYSIS
  • Sayfa Sayıları: ss.409-419

Özet

This article deals with the index of Fredholm complexes of -operators of the Hilbert -modulus on C*-algebra. For this class of operators necessary and sufficient conditions in order to be a Fredholm, are obtained. Based on these results, a notion of Fredholm complex and its index is introduced. For this index, a stability theorem related to various perturbations is proved. In the second part of the article, a completation of a semigroup Fredholm complexes is analysed. It is proved that the group K-G (X, Lambda) is the completation of G -Lambda-fibration of the above group on the compact space X.