Open Coloring Axiom (OCA) is also explicitly stated in the same Faraj's paper on p. 10. > From John Baldwin > Can you tell us what OCA is? In Faraj's paper he refers to another paper > for the statement? > On Tue, 5 Feb 2008, Nik Weaver wrote: >> Farah's > >> http://front.math.ucdavis.edu/0705.3085