Abstract
The paper contains an investigation of certain spectral properties of finite Hermitian Toeplitz matrices. Some classical results relative to a constant Toeplitz matrix C are first extended to the polynomial matrix λI-C. Next, Carathéodory's representation based on the smallest eigenvalue of C is generalized to the case of an arbitrary eigenvalue. The splitting of each eigenspace of a real symmetric Toeplitz matrix C into its reciprocal and antireciprocal subspaces is then characterized. New identities are derived relating the characteristic determinants of the reciprocal and antireciprocal components of the Toeplitz submatrices of C. A special attention is brought to the inverse eigenvalue problem for Toeplitz matrices and some examples are given.
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© 1984 Springer-Verlag
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Delsarte, P., Genin, Y. (1984). Spectral properties of finite Toeplitz matrices. In: Fuhrmann, P.A. (eds) Mathematical Theory of Networks and Systems. Lecture Notes in Control and Information Sciences, vol 58. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0031053
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DOI: https://doi.org/10.1007/BFb0031053
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