Operator Extensions, Interpolation of Functions and Related Topics

1. Front Matter

   Pages i-xiv

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2. On Some Operator Colligations and Associated Reproducing Kernel Hilbert Spaces

   • Daniel Alpay, Vladimir Bolotnikov, Aad Dijksma, Henk de Snoo

   Pages 1-27

3. On the Spectra of Selfadjoint Extensions

   • Johannes Brasche, Hagen Neidhardt, Joachim Weidmann

   Pages 29-45

4. On the Spectrum of Singular Nonselfadjoint Differential Operators

   • Petru A. Cojuhari

   Pages 47-64

5. The Commutant Lifting Theorem for Contractions on Kreĭn Spaces

   • Aad Dijksma, Michael Dritschel, Stefania Marcantognini, Henk de Snoo

   Pages 65-83

6. A Method for Constructing Invariant Subspaces for Some Operators on Kreĭn Spaces

   • Michael A. Dritschel

   Pages 85-113

7. Applications of the Furuta Inequality to Operator Inequalities and Norm Inequalities Preserving Some Orders

   • Takayuki Furuta

   Pages 115-122

8. Quasi-Contractions on Kreĭn Spaces

   • Aurelian Gheondea

   Pages 123-148

9. Antitonicity of the Inverse and J-Contractivity

   • Seppo Hassi, Kenneth Nordstroem

   Pages 149-161

10. Unitary Extensions of a System of Commuting Isometric Operators

    • María Dolores Morán

    Pages 163-169

11. Some Generalizations of Classical Interpolation Problems

    • Adolf A. Nudelman

    Pages 171-188

12. The Kobayashi Distance between two Contractions

    • Ion Suciu

    Pages 189-200

13. The Category of Quotient Bornological Spaces

    • Lucien Waelbroeck

    Pages 201-212

14. Back Matter

    Pages 213-216

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Since 1976 the Institute of Mathematics of the Romanian Academy (formerly the Department of Mathematics of INCREST) and the Faculty of Mathematics (formerly the Faculty of Sciences) of the University ofTimi~oara have organized several Con­ ferences on Operator Theory. These Conferences were held yearly in Timi~oara (or in Timi~oara and Herculane) and beginning with 1985 they were held in Bucharest (1985,1986), in Timi~oara (1988) and in Predeal (1990). At the beginning, these Conferences answered the need of a part of the Romanian Mathematical Community ofexploring other forms of survival, after the dissolution of the Institute of Mathematics in 1975. Soon, these meetings evolved to International Conferences with a broad participation and where important results in Operator Theory and Operator Algebras and their interplay with Complex Function Theory, Differential Equations, Mathematical Physics, System Theory, etc. were presented. The 14th Conference on Operator Theory was held between June 1st and June 5th 1992, at the University ofTimi~oara. It was partially supported by the Institute of Mathematics of the Romanian Academy and by the Faculty of Mathematics of the University ofTimi~oara. Another important contribution towards covering the costs of this meeting came from The Soros Foundation for an Open Society. Without this generous help the organizing of this event would be impossible. Since 1980, the Proceedings of OT Conferences were published by Birkhauser Verlag in the series Operator Theory: Advances and Applications. The abstracts of the talks were collected in the Conference Report, published by the University of Timi~oara.

• analytic function
• differential operator
• function
• spectral theory

• Institute of Mathematics of the Romanian Academy, Bucharest, Romania

  A. Gheondea, D. Timotin, F.-H. Vasilescu

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