Skip to main content

Some Properties of Linear-Fractional Transformations and the Harmonic Mean of Matrix Functions

  • Chapter
Matrix and Operator Valued Functions

Part of the book series: Operator Theory Advances and Applications ((OT,volume 72))

  • 213 Accesses

Abstract

The given linear fractional transformation maps a class of pairs of analytic matrix functions onto a certain set. The conditions under which this set is convex are found. Some new properties of the harmonic mean of matrix functions are obtained.

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 39.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight 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. W. N. Anderson, Jr. and R. J. Duffin, Series and parallel addition of matrices, J. Math. Anal Appl ,3(1969), 576–594.

    Article  MathSciNet  Google Scholar 

  2. I. S. Kac and M. G. Krein, On the spectral function of the string, Appendix 2 to the Russian translation of the book by F. V. Atkinson, Discrete and continuous boundary problems, Mir ,Moscow, 1968, 648–737. English translation, Amer. Math. Soc. Translation (2) 103(1973), 19–102.

    Google Scholar 

  3. I. V. Kovalishina and V. P. Potapov, Indefinite metric in the Nevanlinna-Pick problem. Dokl. Akad. Nauk Armjan. SSR ,59(1974), Nl, 17–22. English translation: Collected apers of V. P. Potapov, private translation and edition by T. Ando, 1982, Sapporo, apan, 33–40.

    MATH  Google Scholar 

  4. I. V. Kovalishina, J-expansive matrix functions and the classical problem of moments.Dokl. Akad. Nauk Armjan. SSR ,60(1975), Nl, 3–10.

    MATH  Google Scholar 

  5. M. G. Krein and A. A. Nudel’man, The Markov moment problem and extremal problems, ranslation Math. Monographs, Vol. 50, Amer. Math. Soc., Providence, Rhode Island,1977.

    Google Scholar 

  6. V. P. Potapov, Fractional-linear transformations of matrices. Studies in the Theory of perators and their Applications ,Kiev, 1979, 75–97. English translation: Collected papers f V. P. Potapov, private translation and edition by T. Ando, 1982, Sapporo, Japan, 1–65.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1994 Springer Basel AG

About this chapter

Cite this chapter

Nudel’man, A.A. (1994). Some Properties of Linear-Fractional Transformations and the Harmonic Mean of Matrix Functions. In: Gohberg, I., Sakhnovich, L.A. (eds) Matrix and Operator Valued Functions. Operator Theory Advances and Applications, vol 72. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8532-4_8

Download citation

  • DOI: https://doi.org/10.1007/978-3-0348-8532-4_8

  • Publisher Name: Birkhäuser, Basel

  • Print ISBN: 978-3-0348-9667-2

  • Online ISBN: 978-3-0348-8532-4

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics