Reducing Subspaces for Toeplitz Operator
Author(s) -
Changguo Wei,
Xin Ding,
Yanyue Shi
Publication year - 2022
Publication title -
journal of function spaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.579
H-Index - 28
eISSN - 2314-8896
pISSN - 2314-8888
DOI - 10.1155/2022/4288928
Subject(s) - linear subspace , mathematics , toeplitz matrix , combinatorics , operator (biology) , discrete mathematics , pure mathematics , biology , genetics , gene , repressor , transcription factor
In this paper, we completely characterize the reducing subspaces for T φ a on weighted Hardy space ℋ ω 2 D 2 under three assumptions on ω , where φ a = z k + a z ¯ l , k , l ∈ ℕ 2 , k ≠ l , and a ∈ 0,1 . It is shown that the coefficient a ∈ 0,1 does not affect the reducing subspaces for T φ a . We also prove that, for every δ > 0 , weighted Dirichlet space D δ 2 D 2 is a weighted Hardy space which satisfies these assumptions. As an application, we describe the reducing subspaces for T φ a on D δ 2 D 2 and get the structure of commutant algebra V ∗ T φ a .
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