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Generalized factorization in Hardy spaces and the commutant of Toeplitz operators

机译:Hardy空间中的广义分解和Toeplitz算子的交换

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Every classical inner function phi in the unit disk gives rise to a certain factorization of functions in Hardy spaces. This factorization, which we call the generalized Riesz factorization, coincides with the classical Riesz factorization when phi(z) = z. In this paper we prove several results about the generalized Riesz factorization, and we apply this factorization theory to obtain a new description of the commutant of analytic Toeplitz operators with inner symbols on a Hardy space. We also discuss several related issues in the context of the Bergman space. [References: 13]
机译:单位圆盘中的每个经典内部函数phi都会在Hardy空间中引起一定程度的函数分解。当phi(z)= z时,我们称之为广义Riesz分解的这种分解与经典Riesz分解一致。在本文中,我们证明了有关广义Riesz因式分解的一些结果,并且我们应用这种因式分解理论来获得对具有Hardy空间上的内部符号的解析Toeplitz算子的交换子的新描述。我们还将在Bergman空间中讨论几个相关问题。 [参考:13]

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