Abstract
This work can be considered as a supplement to our paper ‘Multiplicity of analytic Toeplitz operators’ [2]. Our aim is to generalize the formula for multiplicity to the matrix case. However the main part of the present paper can be read independently of [2]. We prove that in a certain sense a matrix analytic Toeplitz operator reduces to a scalar operator of multiplication on a space of functions on a Riemann surface. In some cases this reduction provides model within to similarity which resemble that of D.Yakubovich [4]. This reduction, as we hope, may appear useful in other problems concerning matrix Toeplitz operators
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References
Baumgärtel, H.: Analytic Perturbation Theory for Matrices and Operators, Birkhäuser, 1985.
Solomyak, B.M., and Volberg, A.L.: Multiplicity of analytic Toeplitz operators, present volume.
Sz.-Nagy, B. and Foias, C.: Harmonic analysis of Operators on Hilbert space, North-Holland, 1970.
Yakubovich, D.V. : Riemann surface models of Toeplitz operators, present volume.
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© 1989 Springer Basel AG
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Solomyak, B.M., Volberg, A.L. (1989). Operator of Multiplication by an Analytic Matrix-Valued Function. In: Nikolskii, N.K. (eds) Toeplitz Operators and Spectral Function Theory. Operator Theory: Advances and Applications, vol 42. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-5587-7_4
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DOI: https://doi.org/10.1007/978-3-0348-5587-7_4
Publisher Name: Birkhäuser, Basel
Print ISBN: 978-3-0348-5589-1
Online ISBN: 978-3-0348-5587-7
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