On Hilbert modules of rational matrix-valued functions and related inverse problems

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摘要

We study a moment problem for rational matrix-valued functions. In particular, we will characterize the case that there is a unique solution. A second main theme is to handle some inverse problems for rational matrix-valued functions. Hereby, we will essentially use several representation formulas for reproducing kernels of the underlying Hilbert modules of rational matrix-valued functions.

论文关键词:47A56,30E05,Nonnegative Hermitian Borel measures on the unit circle,Rational moment problem,Reproducing kernels,Orthogonal rational matrix-valued functions

论文评审过程:Received 1 December 2003, Available online 16 November 2004.

论文官网地址:https://doi.org/10.1016/j.cam.2004.09.042