|
Research Papers
Do some nontrivial closed z-invariant subspaces have the division property?
J. Esterle IMB, UMR 5251, Université de Bordeaux 351, cours de la Libération, 33405 - Talence, France
Abstract:
Banach spaces E of functions holomorphic on the open unit disk D are considered such that the unilateral shift S and the backward shift T are bounded on E. Under the assumption that the spectra of S and T are equal to the closed unit disk, the existence is discussed of closed z-invariant subspaces N of E having the “division property,” which means that the function fλ:z↦f(z)z−λ belongs to N for every λ∈D and for every f∈N with f(λ)=0. This question is related to the existence of nontrivial bi-invariant subspaces of Banach spaces of hyperfunctions on the unit circle T.
Keywords:
unilateral shift, backward shift, division property, invariant subspace, bi-invariant subspace.
Received: 05.05.2020
Citation:
J. Esterle, “Do some nontrivial closed z-invariant subspaces have the division property?”, Algebra i Analiz, 33:4 (2021), 173–209; St. Petersburg Math. J., 33:4 (2022), 711–738
Linking options:
https://www.mathnet.ru/eng/aa1775 https://www.mathnet.ru/eng/aa/v33/i4/p173
|
Statistics & downloads: |
Abstract page: | 133 | Full-text PDF : | 18 | References: | 38 | First page: | 11 |
|