On Extremal Problems of Interpolation Theory with Unique Solution

  • Bernd Fritzsche
  • Bernd Kirstein
  • Lev A. Sakhnovich
Part of the Operator Theory: Advances and Applications book series (OT, volume 199)


The main goal of this paper is to investigate the matrix extremal interpolation problem formulated in Chapter 7 of the monograph [7]. We give natural conditions under which the problem has one and only one solution. The basic idea of the proof is to use the matrix Riccati equation deduced in [7, Chapter 7].

Mathematics Subject Classification (2000)

Primary: 47A57 


Matricial interpolation problems minimal solutions nonlinear matrix equation regular interpolation problems 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2010

Authors and Affiliations

  • Bernd Fritzsche
    • 1
  • Bernd Kirstein
    • 1
  • Lev A. Sakhnovich
    • 2
  1. 1.Fakultät für Mathematik und InformatikUniversität LeipzigLeipzigGermany
  2. 2.MilfordUSA

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