Exterior products of operators and superoptimal analytic approximation

Abstract We give a new algorithm for the construction of the unique superoptimal analytic approximant of a given continuous matrix‐valued function on the unit circle, using exterior powers of operators in preference to spectral or Wiener–Masani factorizations.

Bibliographic Details
Main Authors: Dimitrios Chiotis, Zinaida A. Lykova, N. J. Young
Format: Article
Language:English
Published: Wiley 2021-12-01
Series:Transactions of the London Mathematical Society
Subjects:
Online Access:https://doi.org/10.1112/tlm3.12035