pressing down lemma;
countably metacompact;
product space;
D O I:
10.1016/S0166-8641(96)00106-X
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
We show omega(1)(n) is hereditarily countably metacompact for each n is an element of omega, but omega(1)(omega) is not. (C) 1997 Published by Elsevier Science B.V.