61 citations · 282 across the 39 of their papers we have counts for
5 papers · 1 filter
Kernels of Toeplitz operators
Andreas Hartmann, Mishko Mitkovski
Toeplitz operators are met in different fields of mathematics such as stochastic processes, signal theory, completeness problems, operator theory, etc. In applications, spectral an…
Geometry of reproducing kernels in model spaces near the boundary
Anton Baranov, Andreas Hartmann, Karim Kellay
We study two geometric properties of reproducing kernels in model spaces where is an inner function in the disc: overcompleteness and existence of uniformly minimalsystem…
Range Spaces of Co-analytic Toeplitz Operators
Emmanuel Fricain, Andreas Hartmann, William T. Ross
We discuss the range spaces of Toeplitz operators with co-analytic symbols where we focus on the boundary behavior of the functions in these spaces as well as a natural orthogonal…
Geometric conditions for multiple sampling and interpolation in the Fock space
Alexander Borichev, Andreas Hartmann, Karim Kellay +1
We study multiple sampling, interpolation and uniqueness for the classical Fock spaces in the case of unbounded multiplicities. We show that there are no sequences which are simult…
Multiple sampling and interpolation in the classical Fock space
Alexander Borichev, Andreas Hartmann, Karim Kellay +1
We study multiple sampling, interpolation and uniqueness for the classical Fock space in the case of unbounded mul-tiplicities.