Ultraholomorphic sectorial extensions of Beurling type
arXiv:2012.12332 · doi:10.1007/s43034-021-00124-x
Abstract
We prove sectorial extension theorems for ultraholomorphic function classes of Beurling type defined by weight functions with a controlled loss of regularity. The proofs are based on a reduction lemma, due to the second author, which allows to extract the Beurling from the Roumieu case, which was treated recently by Jiménez-Garrido, Sanz, and the third author. In order to have control on the opening of the sectors, where the extensions exist, we use the (mixed) growth index and the order of quasianalyticity of weight functions. As a consequence we obtain corresponding extension results for classes defined by weight sequences. Additionally, we give information on the existence of continuous linear extension operators.
arXiv comment17 pages; paper was restructured and shortened, 15 pages, accepted for publication in Annals of Functional Analysis
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