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arXiv · 0804.1445

Combinatorial and model-theoretical principles related to regularity of ultrafilters and compactness of topological spaces. II

Paolo Lipparini
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Abstract

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.

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Paolo Lipparini. 2008-04-09. Combinatorial and model-theoretical principles related to regularity of ultrafilters and compactness of topological spaces. II. https://arxiv.org/abs/0804.1445

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