Geodesic
Description of Scattering Matrices of Unitary Extensions of Isometric Operators in Pontryagin Space
Matematičeskie zametki, Tome 94 (2013) no. 6, pp. 940-943.

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Keywords: unitary extension of an isometric operator, scattering matrix, Pontryagin space, resolvent matrix, Nevanlinna-Pick problem, Weyl function, Schur class.
Mots-clés : bitangent interpolation problem 
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D. V. Baydyuk. Description of Scattering Matrices of Unitary Extensions of Isometric Operators in Pontryagin Space. Matematičeskie zametki, Tome 94 (2013) no. 6, pp. 940-943. http://geodesic.mathdoc.fr/item/MZM_2013_94_6_a13/

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