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The Growth of the Resolvent Operator and Applications to Completeness

  • Israel Gohberg
  • Seymour Goldberg
  • Marinus A. Kaashoek
Chapter
Part of the Operator Theory: Advances and Applications book series (OT, volume 49)

Abstract

The behaviour of the resolvent in a neighbourhood of the spectrum is one of the important characteristics of an operator. The first section presents a basic theorem in which a sharp evaluation is given of the norm of an inverse operator in terms of the determinant and the singular values. The theorem is used in the second section to evaluate the growth of the resolvent of a Volterra operator. The applications concern two completeness theorems, which are presented in the last two sections.

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Copyright information

© Springer Basel AG 1990

Authors and Affiliations

  • Israel Gohberg
    • 1
  • Seymour Goldberg
    • 2
  • Marinus A. Kaashoek
    • 3
  1. 1.School of Mathematical Sciences Raymond and Beverly Sackler Faculty of Exact SciencesTel-Aviv UniversityTel-AvivIsrael
  2. 2.Department of MathematicsUniversity of MarylandCollege ParkUSA
  3. 3.Faculteit Wiskunde en InformaticaVrije UniversiteitAmsterdamThe Netherlands

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