1 citations · 1 across the 3 of their papers we have counts for
Showing math.FAShow all
2 papers · 1 filter
math.FA2026
Extremal representations of functions of matrices and applications to multivariate prediction
Michael Frank, Lutz Klotz, Andreas Lasarow
Motivated by two seminal results of multivariate prediction theory by Helson and Lowdenslager and by Wiener and Masani we prove extremal representations of functions of matrices an…
math.FA2009
Shift Operators Contained in Contractions, Pseudocontinuable Schur Functions and Orthogonal Systems on the Unit Circle
Vladimir K. Dubovoy, Bernd Fritzsche, Bernd Kirstein
The main aim of this paper is to establish the connection between well-known criteria for the pseudocontinuability of a non-inner Schur function Theta in the unit disk. In a canoni…