Abstract
We give a characterization of compact and Fredholm operators on polyanalytic Fock spaces in terms of limit operators. As an application we obtain a generalization of the Bauer–Isralowitz theorem using a matrix valued Berezin type transform. We then apply this theorem to Toeplitz and Hankel operators to obtain necessary and sufficient conditions for compactness. As it turns out, whether or not a Toeplitz or Hankel operator is compact does not depend on the polyanalytic order. For Hankel operators this even holds on the true polyanalytic Fock spaces.
In Memory of Harold Widom
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Hagger, R. (2022). Toeplitz and Related Operators on Polyanalytic Fock Spaces. In: Basor, E., Böttcher, A., Ehrhardt, T., Tracy, C.A. (eds) Toeplitz Operators and Random Matrices. Operator Theory: Advances and Applications, vol 289. Birkhäuser, Cham. https://doi.org/10.1007/978-3-031-13851-5_18
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