论文标题

马丁公理,弱方形,弱的猜想和强迫公理失败的概括

Generalizations of Martin's Axiom, weak square, weak Chang's Conjecture, and a forcing axiom failure

论文作者

Aspero, David, Tananimit, Nutt

论文摘要

我们证明了强迫Axiom $ ma^{1.5} _ {\ aleph_2}(\ mbox {stratified})$暗示$ \ box_ {ω_1,ω_1} $。使用这种含义,我们表明强迫Axiom $ mm _ {\ Aleph_2}(\ Aleph_2 \ Mbox {-c.c。})$是不一致的。我们还从$ ma^{1.5} _ {\ aleph_2}(\ mbox {stratified})$中得出了弱的猜想。

We prove that the forcing axiom $MA^{1.5}_{\aleph_2}(\mbox{stratified})$ implies $\Box_{ω_1, ω_1}$. Using this implication, we show that the forcing axiom $MM_{\aleph_2}(\aleph_2\mbox{-c.c.})$ is inconsistent. We also derive weak Chang's Conjecture from $MA^{1.5}_{\aleph_2}(\mbox{stratified})$ and use this second implication to give another proof of the inconsistency of $MM_{\aleph_2}(\aleph_2\mbox{-c.c.})$.

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