Abstract

A classical theorem of Hechler asserts that the structure (ωω,≤∗)\left(ω^ω,\le^*\right) is universal in the sense that for any σσ-directed poset P with no maximal element, there is a ccc forcing extension in which (ωω,≤∗)\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 (κκ,≤S)\left(κ^κ,\le^S\right): Theorem. Assume GCH. For every regular uncountable cardinal κκ, there is a cofinality-preserving GCH-preserving forcing extension in which for every analytic quasi-order Q over κκκ^κ and every stationary subset S of κκ, there is a Lipschitz map reducing Q to (κκ,≤S)(κ^κ,\le^S).

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