摘要
In this paper,the authors completely characterize when two dual truncated Toeplitz operators ar e essentially commuting and when the semicommutator of two dual truncated Toeplitz operators is compact.Their main idea is to study dual truncated Toeplitz operators via Hankel operators,Toeplitz operators and function algebras.
基金
supported by the National Natural Science Foundation of China(Nos.11531003,12371125)
the Fundamental Research Funds for the Central Universities(Nos.2020CDJQY-A039,2020CDJ-LHSS-003)。
