2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/208329We study the dynamics of co-evolution of producers and customers described by bit-strings representing individual traits. Individual ''size-like'' properties are controlled by binary encounters which outcome depends upon a recognition process. Depending upon the parameter set-up, mutual selection of producers and customers results in different types of attractors, either an exclusive niches regime or a competition regime.General FinancePhysics and Societytext