activity
20052024
most citedCoupling and relaxed commutant lifting

17 citations · 32 across the 11 of their papers we have counts for

collaborators

11 papers

math.FA2024

Wiener-Hopf indices of unimodular functions on the imaginary axis

A. E. Frazho, A. C. M. Ran, F. van Schagen

This paper is concerned with the Wiener-Hopf indices of unimodular rational matrix functions on the imaginary axis. These indices play a role in the Fredholm theory for Wiener-Hopf…

math.FA2023

Wiener-Hopf indices of unimodular functions on the unit circle, revisited

A. E. Frazho, M. A. Kaashoek, A. C. M. Ran +1

Inspired by the paper of Groenewald, Kaashoek and Ran (Wiener-Hopf indices of unitary functions on the unit circle in terms of realizations and related results on Toeplitz operator…

math.FA2018★ 2 cited

All solutions to an operator Nevanlinna-Pick interpolation problem

A. E. Frazho, S. Ter Horst, M. A. Kaashoek

The main results presented in this paper provide a complete and explicit description of all solutions to the left tangential operator Nevanlinna- Pick interpolation problem assumin…

math.FA2014

State space formulas for a suboptimal rational Leech problem II: Parametrization of all solutions

A. E. Frazho, S. ter Horst, M. A. Kaashoek

For the strictly positive case (the suboptimal case), given stable rational matrix functions and , the set of all solutions to the Leech problem associated wi…

math.FA2014

State space formulas for a suboptimal rational Leech problem I: Maximum entropy solution

A. E. Frazho, S. ter Horst, M. A. Kaashoek

For the strictly positive case (the suboptimal case) the maximum entropy solution to the Leech problem and , with $…

math.FA2014★ 2 cited

State space formulas for stable rational matrix solutions of a Leech problem

A. E. Frazho, S. ter Horst, M. A. Kaashoek

Given stable rational matrix functions and , a procedure is presented to compute a stable rational matrix solution to the Leech problem associated with and , that…