On Schur–Nevanlinna–Pick Indefinite Interpolation Problem

• Date: 2003
• Main Authors: Derkach, V. A., Деркач, В. А.
• Format: Article
• Language: Russian; English
• Published: Institute of Mathematics, NAS of Ukraine 2003
• Online Access: https://umj.imath.kiev.ua/index.php/umj/article/view/4004
• Journal Title: Ukrains’kyi Matematychnyi Zhurnal

The Schur–Nevanlinna–Pick interpolation problem is considered in the class of generalized Schur functions and reduced to the problem of the extension of a certain isometric operator V that acts in the Pontryagin space. The description of the solutions of this problem is based on the theory of the re...