On the Bitangential Interpolation Problem for Contractive Valued Functions in the Polydisk
We solve the bitangential interpolation problem with a finite number of interpolating points for the multivariable analogue of the Schur class introduced by J. Agler. The description of all solutions is parametrized by a Redheffer transform whose entries are given explicitly in terms of the interpolation data.
D. Alpay, J. Ball and V. Bolotnikov, On the bitangential interpolation problem for contractive valued functions in the polydisk. Journal of Operator Theory., vol. 44 (2000), 277-301.
American Mathematical Society