EMIS ELibM Electronic Journals PUBLICATIONS DE L'INSTITUT MATHÉMATIQUE (BEOGRAD) (N.S.)
Vol. 63 (77), pp. 55--65 (1998)

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Perturbed interpolation problems

Du\v san Georgijevi\'c

Katedra za matematiku, Ma\v sinski fakultet, Beograd, Yugoslavia

Abstract: A sort of perturbations of interpolation problems is used, which enables to transfer the known results on interior interpolation problems of Pick--Nevanlinna type to boundary value interpolation problems. It is shown that the nonnegativity and the so called absence-of-residues property of the Pick kernel are necessary and sufficient condition for solvability of a matricial directional boundary value interpolation problem of Pick--Nevanlinna type.

Classification (MSC2000): 30E05; 30E25

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Electronic fulltext finalized on: 6 Apr 2000. This page was last modified: 16 Nov 2001.

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