Topology and its Applications 
Volume 14, Issue 3 , 1982, Pages 313-317

On box products

Arnold W. Miller


Abstract:

We prove two theorems about box products. The first theorem says that the
box product of countable spaces is pseudonormal, i.e. any two disjoint
closed sets one of which is countable can be separated by open sets. The
second theorem says that assuming CH a certain uncountable box product is
normal.