4 papers
math.FA2026
Hilbert-Schmidt Norms of Self-Commutator and Cross-Commutator on -type Quotient Modules in Polydisc
Anjian Xu, Yuchao Xiang
Let be nonconstant one-variable inner functions satisfying for all . Denote by the submodule of the Hardy space $H^{2}(\mathb…
math.FA2022
Characterizations of functions in wandering subspaces of the Bergman Shift via the Hardy space of the Bidisc
Shunhua Sun, Anjian Xu
Let be the corresponding wandering subspace of an invariant subspace of the Bergman shift. By identifying the Bergman space with , a su…
math.FA2014
Generalized Bundle Shift with Application to Multiplication operator on the Bergman space
Ronald G. Douglas, Dinesh Kumar Keshari, Anjian Xu
Following upon results of Putinar, Sun, Wang, Zheng and the first author, we provide models for the restrictions of the multiplication by a finite Balschke product on the Bergman s…
math.FA2014
Transitivity and bundle shifts
Ronald G. Douglas, Anjian Xu
A subalgebra of the algebra of bounded linear operators on a separable Hilbert space is said to be catalytic if every transitive subalgebra $\mat…