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Nonstationary analogues of the Herglotz representation theorem for unbounded operators

โœ Scribed by D. Alpay; V. Bolotnikov; A. Dijksma; B. Freydin


Publisher
Springer
Year
2002
Tongue
English
Weight
238 KB
Volume
78
Category
Article
ISSN
0003-889X

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๐Ÿ“œ SIMILAR VOLUMES


Nonstationary Analogs of the Herglotz Re
โœ D. Alpay; A. Dijksma; Y. Peretz ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 283 KB

For upper triangular operators with nonnegative real part, we derive generalized Herglotz representation theorems in which the main operator is coisometric, isometric, or unitary. The proofs are based on the representation theorems for upper triangular contractions considered earlier by D. Alpay and