Countable Model;
Force Notion;
Master Condition;
Disjoint Family;
Maximal Antichain;
D O I:
10.1007/BF02774029
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Two total functions f, g from omega(1) to omega are called strongly almost disjoint if {alpha < omega(1): f(alpha) = g(alpha)} is finite. We show that it is consistent with ZFC to have families of pairwise strongly almost disjoint functions of arbitrary prescribed size.
机构:
York Univ, Sch Analyt Studies & Informat Technol, N York, ON M3J 1P3, CanadaYork Univ, Sch Analyt Studies & Informat Technol, N York, ON M3J 1P3, Canada