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arXiv 2212.03333math.LO
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粘合性质

The Gluing Property

Einstein Institute of Mathematics, Hebrew University of Jerusalem(希伯来大学爱因斯坦数学研究所);Harvard University(哈佛大学)

Yair Hayut, Alejandro Poveda

AI总结:

本文引入了称为粘合性质的新紧致性原理,证明了每个κ-紧致的基数具有2^κ-粘合性质,但不一定具有(2^κ)^+-粘合性质,并计算了κ具有ω-粘合性质的精确一致性强度为o(κ)=ω_1。

摘要:

我们介绍了一个新的紧致性原理,称为粘合性质。对于一个可测基数κ和一个基数λ,我们说κ具有λ-粘合性质,如果每一个由λ多个κ-完备超滤子组成的序列可以被粘合为一个κ-完备的扩展子。我们证明了每个κ-紧致的基数具有2^κ-粘合性质,但未必具有(2^κ)^+-粘合性质。最后,我们计算了κ具有ω-粘合性质的确切一致性强度;此为o(κ)=ω_1。

英文摘要:

We introduce a new compactness principle which we call the gluing property. For a measurable cardinal $κ$ and a cardinal $λ$, we say that $κ$ has the $λ$-gluing property if every sequence of $λ$-many $κ$-complete ultrafilters on $κ$ can be glued into a $κ$-complete extender. We show that every $κ$-compact cardinal has the $2^κ$-gluing property, yet non-necessarily the $(2^κ)^+$-gluing property. Finally, we compute the exact consistency-strength for $κ$ to have the $ω$-gluing property; this being $o(κ)=ω_1$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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