Combinatorial and model-theoretical principles related to regularity of ultrafilters and compactness of topological spaces. II
Abstract
Description
We find many conditions equivalent to the model-theoretical property $λ\stackrelκ{\Rightarrow} μ$ introduced in [L1].
Our conditions involve uniformity of ultrafilters, compactness properties of products of topological spaces and the existence of certain infinite matrices.
5 pages
5 pages