Abstract
In this paper, we study the forcing axiom for the class of proper forcing notions which do not add ω sequence of ordinals. We study the relationship between this forcing axiom and many cardinal invariants. We use typical iterated forcing with large cardinals and analyse certain property being preserved in this process. Lastly, we apply the results to distinguish several forcing axioms.
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Zhu, H. Distributive proper forcing axiom and cardinal invariants. Arch. Math. Logic 52, 497–506 (2013). https://doi.org/10.1007/s00153-013-0327-x
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DOI: https://doi.org/10.1007/s00153-013-0327-x