14 research outputs found
Multi-operator colligations and multivariate characteristic functions
Full text linkIn the spectral theory of non-self-adjoint operators there is a well-known
operation of product of operator colligations. Many similar operations appear
in the theory of infinite-dimensional groups as multiplications of double
cosets. We construct characteristic functions for such double cosets and get
semigroups of matrix-valued functions in matrix balls.Comment: 15p
Abstract, weighted, and multidimensional Adamjan-Arov-Krein theorems, and the singular numbers of Sarason commutants
No full text
Experimental evidence for the existence of H and for a specific structure of He
No full textInternational audienc
The Zero-Removing Property in Hilbert Spaces of Entire Functions Arising in Sampling Theory
No full textSampling and interpolating sequences for multiband-limited functions and exponential bases on disconnected sets
No full text
