Almost disjoint sets and Martin's axiom

Publisher: Cambridge University Press

E-ISSN: 1943-5886|44|3|313-318

ISSN: 0022-4812

Source: The Journal of Symbolic Logic, Vol.44, Iss.3, 1979-09, pp. : 313-318

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Abstract

We present a number of results involving almost disjoint sets and Martin's axiom. Included is an example, due to K. Kunen, of a c.c.c. partial order without property K whose product with every c.c.c. partial order is c.c.c.