Combinatorial principles from adding Cohen reals

Details Combinatorial principles from adding Cohen reals Combinatorial principles from adding Cohen reals

1996-05-14

arxiv.org/abs/math/9605211v1

Mathematics

Logic

Scientific paper

In this paper we first formulate several ``combinatorial principles'' concerning kappa \times omega matrices of subsets of omega and prove that they are valid in the generic extension obtained by adding any number of Cohen reals to any ground model V, provided that the parameter kappa is an omega-inaccessible regular cardinal in V. Then we present a large number of applications of these principles, mainly to topology. Some of these consequences had been established earlier in generic extensions obtained by adding omega_2 Cohen reals to ground models satisfying CH, mostly for the case kappa=omega_2.

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