2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/160715In this paper we find necessary and sufficient conditions for the weak convergence of c-free convolution of pairs of measures, where the measures are assumed to be infinitesimal and their support may be unbounded. These results are obtained by complex analytic methods.Second version; corrected typosOperator AlgebrasProbability46L53; 60F05text