Resumen de Ratio asymptotic of Hermite�Padé orthogonal polynomials for Nikishin systems. II

Abey López García, Guillermo Tomás López Lagomasino

• We prove ratio asymptotic for sequences of multiple orthogonal polynomials with respect to a Nikishin system of measures such that for each k, sk has constant sign on its support consisting on an interval , on which almost everywhere, and a set without accumulation points in