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math.FA2020
Essentially commuting dual truncated Toeplitz operators
Chongchao Wang, Xianfeng Zhao, Dechao Zheng
In this paper, we completely characterize when two dual truncated Toeplitz operators are essentially commuting and when the semicommutator of two dual truncated Toeplitz operators…
math.FA2020★ 1 cited
The spectral picture of Bergman Toeplitz operators with harmonic polynomial symbols
Kunyu Guo, Xianfeng Zhao, Dechao Zheng
In this paper, it is shown that some new phenomenon related to the spectra of Toeplitz operators with bounded harmonic symbols on the Bergman space. On the one hand, we prove that…