2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162649We continue the investigation of Gregory trees and the Cantor Tree Property carried out by Hart and Kunen. We produce models of MA with the Continuum arbitrarily large in which there are Gregory trees, and in which there are no Gregory trees.LogicGregory Trees, The Continuum, And Martin's Axiomtext