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Inclusion modulo nonstationary

A classical theorem of Hechler asserts that the structure $\left(ω^ω,\le^*\right)$ is universal in the sense that for any $σ$-directed poset P with no maximal element, there is a ccc forcing extension in which $\left(ω^ω,\le^*\right)$ contains a cofinal order-isomorphic copy of P. In this paper, we prove a consistency result concerning the universality of the higher analogue $\left(κ^κ,\le^S\right)$: Theorem. Assume GCH. For every regular uncountable cardinal $κ$, there is a cofinality-preserving GCH-preserving forcing extension in which for every analytic quasi-order Q over $κ^κ$ and every stationary subset S of $κ$, there is a Lipschitz map reducing Q to $(κ^κ,\le^S)$.

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Co-authorshipCo-authorshipCo-authorshipAuthorshipAuthorshipAuthorshipTopic signalWInclusion modulo nonstationarypreprint / 2020AGabriel FernandesResearcherAMiguel MorenoResearcherAAssaf RinotResearcherTmath.LO1661 works
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Inclusion modulo nonstationary

preprint / 2020

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