Abstract
We consider the family of Toeplitz operators \(T_{J\bar{S}^{a}}\) acting in the Hardy space H 2 in the upper halfplane; J and S are given meromorphic inner functions, and a is a real parameter. In the case where the argument of S has a power law type behavior on the real line, we compute the critical value
The formula for c(J,S) generalizes the Beurling-Malliavin theorem on the radius of completeness for a system of exponentials.
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The first author is supported by N.S.F. Grant No. 0201893.
The second author is supported by N.S.F. Grant No. 0500852.
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Makarov, N., Poltoratski, A. Beurling-Malliavin theory for Toeplitz kernels. Invent. math. 180, 443–480 (2010). https://doi.org/10.1007/s00222-010-0234-2
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DOI: https://doi.org/10.1007/s00222-010-0234-2