2 papers
math.LO2008
Gregory Trees, The Continuum, And Martin's Axiom
Kenneth Kunen, Dilip Raghavan
We 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 the…
math.LO2007
There is a Van Douwen MAD family
Dilip Raghavan
We prove in ZFC that there is a MAD family of functions in omega^omega which is also maximal with respect to infinite partial functions. This solves a 20 year old question of Van D…