The S-recurrence of Schur Parameters of Non-inner Rational Schur Functions

  • Vladimir K. Dubovoy
  • Bernd Fritzsche
  • Bernd Kirstein
Conference paper
Part of the Operator Theory: Advances and Applications book series (OT, volume 202)


The main goal of this paper is to investigate the Schur parameter sequences of non-inner rational Schur functions. It is shown that these Schur parameter sequences are characterized by the membership in the spaceℓ2 and a particular recurrence property which is called S-recurrence. Moreover, we indicate a principle of extending a finite sequence of numbers from the open unit disk to an S-recurrence sequence belonging to l 2.


Non-inner rational Schur functions Schur algorithm Schur parameter sequences S-recurrent sequences 

Mathematics Subject Classification (2000)

30D50 47A48 47A45 


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Copyright information

© Birkhäuser Verlag Basel/Switzerland 2010

Authors and Affiliations

  • Vladimir K. Dubovoy
    • 1
  • Bernd Fritzsche
    • 2
  • Bernd Kirstein
    • 2
  1. 1.Department of Mathematics and MechanicsState UniversityKharkovUkraine
  2. 2.Mathematisches InstitutLeipzigGermany

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