2 papers
math.CA2023
Centrosymmetric and reverse matrices in bivariate orthogonal polynomials
Cleonice F. Bracciali, Glalco S. Costa, Teresa E. Pérez
We introduce the concept of reflexive moment functional in two variables and the definition of reflexive orthogonal polynomial system. Also reverse matrices and their interesting a…
math.CA2022
Two variable Freud orthogonal polynomials and matrix Painlevé-type difference equations
Cleonice F. Bracciali, Glalco S. Costa, Teresa E. Pérez
We study bivariate orthogonal polynomials associated with Freud weight functions depending on real parameters. We analyze relations between the matrix coefficients of the three ter…