Changing cardinal characteristics without changing omega-sequences or cofinalities

Details Changing cardinal characteristics without changing omega-sequences or cofinalities Changing cardinal characteristics without changing omega-sequences or cofinalities

1999-01-22

arxiv.org/abs/math/9901096v1

Mathematics

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Scientific paper

We show: There are pairs of universes V_1 subseteq V_2 and there is a notion
of forcing P in V_1 such that the change mentioned in the title occurs when
going from V_1[G] to V_2[G] for a P-generic filter G over V_2. We use forcing
iterations with partial memories. Moreover, we implement highly transitive
automorphism groups into the forcing orders.

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