Some results about (+) proved by iterated forcing
Tetsuya Ishiu and Paul B. Larson
Source: J. Symbolic Logic Volume 77, Issue 2
(2012), 515-531.
Abstract
We shall show the consistency of CH+¬(+) and CH+(+)+there are no club guessing sequences on ω₁. We shall also prove that ♢⁺ does not imply the existence of a strong club guessing sequence on ω₁.
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Links and Identifiers
Permanent link to this document: http://projecteuclid.org/euclid.jsl/1333566635
Digital Object Identifier: doi:10.2178/jsl/1333566635
Mathematical Reviews number (MathSciNet): MR2963019
