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Unitary colligations of operators in Krein spaces

✍ Scribed by Stefania Marcantognini

Publisher
SP Birkhäuser Verlag Basel
Year
1990
Tongue
English
Weight
827 KB
Volume
13
Category
Article
ISSN
0378-620X

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📜 SIMILAR VOLUMES

Normal generalized selfadjoint operators
Normal generalized selfadjoint operators in Krein spaces
✍ Scott A. McCullough; Leiba Rodman 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 518 KB

A lull description is given of n-selfadjoint normal operators in Krein spaces of finite defect, as well as in general Krein spaces. Both real and complex Krein spaces are considered.

Unitary Colligations, Reproducing Kernel
Unitary Colligations, Reproducing Kernel Hilbert Spaces, and Nevanlinna–Pick Interpolation in Several Variables
✍ Joseph A Ball; Tavan T Trent 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 669 KB

Recently J. Agler studied the class S d of scalar-valued, analytic functions of d complex variables f for which f (T 1 , ..., T d ) has norm at most 1 for any collection of d commuting contractions (T 1 , ..., T d ) on a Hilbert space H. Among other results he obtained a characterization of such fun