2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221128We study a model due to J.M. Lasry and P.L. Lions, describing the evolution of a scalar price which is realized as a free boundary in a 1-D diffusion equation with dynamically evolving, non-standard sources. We establish global existence and uniqueness.Analysis of PDEstext