Existence of almost free abelian groups and reflection of stationary set

Details Existence of almost free abelian groups and reflection of stationary set Existence of almost free abelian groups and reflection of stationary set

1996-06-15

arxiv.org/abs/math/9606229v1

Math. Japon. 45 (1997), 1--14

Mathematics

Logic

Scientific paper

section 2: We answer a question of Mekler Eklof on the closure operations of
the incompactness spectrum. We answer a question of Foreman and Magidor on
reflection of stationary subsets of S_{< aleph_2}(lambda) = {a subseteq lambda
: |a| < aleph_2}]. section 3 - NPT is not transitive. We prove NPT(lambda, mu)
+ NPT(mu, kappa) not => NPT(lambda, kappa)

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