2 papers
math.NA2021
Zeros of quasi-paraorthogonal polynomials and positive quadrature
Adhemar Bultheel, Ruymán Cruz-Barroso, Carlos Díaz Mendoza
In this paper we illustrate that paraorthogonality on the unit circle is the counterpart to orthogonality on when we are interested in the spectral proper…
math.NA2017
Orthogonal Rational Functions on the Unit Circle with Prescribed Poles not on the Unit Circle
Adhemar Bultheel, Ruyman Cruz-Barroso, Andreas Lasarow
Orthogonal rational functions (ORF) on the unit circle generalize orthogonal polynomials (poles at infinity) and Laurent polynomials (poles at zero and infinity). In this paper we…