Skip to main content

Part of the book series: Operator Theory: Advances and Applications ((OT,volume 163))

  • 613 Accesses

Abstract

M.G. Krein’s method of directing mappings is extended to quasidensely defined symmetric operators with selfadjoint definitizable extensions in some Krein space, by direct use of the spectral function of the extension, thus avoiding a reduction to the semidefinite situation.

To Heinz Langer on the occasion of his retirement.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 84.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Hardcover Book
USD 109.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. M.B. Bekker, Isometric operators with directing mappings. Current analysis and its applications 218, 3–9, “Naukova Dumka”, Kiev, 1989 (Russian).

    Google Scholar 

  2. B. Ćurgus, H. Langer, Krein space approach to symmetric ordinary differential operators with an indefinite weight function. J. Differential Equations 79 (1989), no. 1, 31–61.

    Article  MathSciNet  Google Scholar 

  3. M.G. Krein, On hermitian operators with directing functionals. Sb. Trud. Inst. Mat. Kiev 10 (1948), 83–106 (Ukrainian).

    MathSciNet  Google Scholar 

  4. M.G. Krein, H. Langer, Über die Q-Funktion eines π-hermiteschen Operators im Raume Πκ. Acta Sci. Math. (Szeged) 34 (1973), 191–230.

    MathSciNet  Google Scholar 

  5. M.G. Krein, H. Langer, Some propositions on analytic matrix functions related to the theory of operators in the space Πκ. Acta Sci. Math. (Szeged) 43 (1981), 181–205.

    MathSciNet  Google Scholar 

  6. H. Langer, Zur Spektraltheorie linearer Operatoren in J-Räumen und einige Anwendungen auf die Schar L(λ) = λ2I + λB + C. Habilitationsschrift, Techn. Universität Dresden, 1965.

    Google Scholar 

  7. H. Langer, Über die Methode der richtenden Funktionale von M.G.Krein. ActaMath. Acad. Sci. Hungar. 21 (1970), 207–224.

    Article  MATH  Google Scholar 

  8. H. Langer, Spectral functions of definitizable operators in Krein spaces. Functional analysis, Proc. Dubrovnik 1981, Lecture Notes in Math. 948, pp 1–46, Springer-Verlag, Berlin, 1982.

    Google Scholar 

  9. H. Langer, B. Textorius, Spectral functions of a symmetric linear relation with a directing mapping. Proc. Roy. Soc. Edinburgh 81A (1978), 237–246.

    MathSciNet  Google Scholar 

  10. H. Langer, B. Textorius, Spectral functions of a symmetric linear relation with a directing mapping, I. Proc Roy. Soc. Edinburgh 97A (1984), 165–176.

    MathSciNet  Google Scholar 

  11. M.A. Naimark, Linear differential operators. Ungar, New York 1968.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2005 Birkhäuser Verlag Basel/Switzerland

About this chapter

Cite this chapter

Textorius, B. (2005). Directing Mappings in Krein Spaces. In: Langer, M., Luger, A., Woracek, H. (eds) Operator Theory and Indefinite Inner Product Spaces. Operator Theory: Advances and Applications, vol 163. Birkhäuser Basel. https://doi.org/10.1007/3-7643-7516-7_15

Download citation

Publish with us

Policies and ethics