Numerical ranges of composition operators with elliptic automorphism symbols

نویسندگان

چکیده

In this paper, we investigate the numerical ranges of composition operators, whose symbols are elliptic automorphisms finite orders on Hilbert–Hardy space $$H^2(D).$$ We give complete descriptions operators induced by order 2 and 3.

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ژورنال

عنوان ژورنال: Banach Journal of Mathematical Analysis

سال: 2023

ISSN: ['1735-8787', '2662-2033']

DOI: https://doi.org/10.1007/s43037-023-00264-3