The PFA-to-superstrong-cardinal conjecture in the uB derived model

From papers

Assume that the Proper Forcing Axiom PFA\operatorname{PFA} holds. Let κω2\kappa\geq\omega_2, and let gg be Col(ω,κ)\operatorname{Col}(\omega,\kappa)-generic over VV. Then

there is a superstrong cardinal in HODL(uBg,Rg).\text{there is a superstrong cardinal in }\operatorname{HOD}^{L({{\sf{uB}}}_g,\mathbb{R}_g)}.

PFA-to-superstrong-cardinal conjecture. Under these hypotheses, there is a superstrong cardinal in HODL(uBg,Rg)\operatorname{HOD}^{L({{\sf{uB}}}_g,\mathbb{R}_g)}.

This is a typical target of the core model induction, connecting forcing axioms with large-cardinal strength in canonical determinacy models. The source states that the conjecture is currently open even when a Woodin limit of Woodin cardinals is assumed instead of a superstrong cardinal.

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Sources & referencesView supporting material

Primary source

Sandra Müller and Grigor Sargsyan, “Gödel's Program in Set Theory”, arXiv:2412.07325 (2024).

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