2 papers
math.CA2005
On Extensions of a Theorem of Baxter
J. S. Geronimo, A. Martinez-Finkelshtein
We combine the Riemann-Hilbert approach with the techniques of Banach algebras to obtain an extension of Baxter's Theorem for polynomials orthogonal on the unit circle. This is acc…
math.CA2005
Factorization of Multivariate Positive Laurent Polynomials
Jeffrey S. Geronimo, Ming-Jun Lai
Recently Dritschel proves that any positive multivariate Laurent polynomial can be factorized into a sum of square magnitudes of polynomials. We first give another proof of the Dri…