A class of multiplicity free truncated Toeplitz operators
A class of multiplicity free truncated Toeplitz operators
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DOI:
10.1016/j.jmaa.2021.125359
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发表时间:
2021
影响因子:
1.3
通讯作者:
Yufei Li
中科院分区:
文献类型:
--
作者:
Yufei Li
In this paper, we characterize the commutant of the truncated Toeplitz operator on K θ 2 with symbol z n by the commutant lifting theorem. Using this result we determine when A z n θ is multiplicity free, which generalizes a result of Douglas and Foias [5] and solves a conjecture of Gu [9].