On densities of box products
Moti Gitik, Saharon Shelah
Abstract
We construct two universes V1, V2 satisfying the following: GCH below ω, 2ω = ω+2 and the topological density of the space 2ω with 0 box product topology is ω+1 in V1 and ω+2 in V2. Further related results are discussed as well.
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