PFA conjecture on derived models at limits of Woodin cardinals

From papers

Let D(V,κ)\mathcal{D}(V,\kappa) denote the derived model at κ\kappa, let ΘD(V,κ)\Theta^{D(V,\kappa)} be its supremum of ordinals surjected by its reals, and let κ+\kappa^+ be the successor cardinal of κ\kappa. Suppose κ\kappa is a limit of Woodin cardinals. PFA conjecture. The following both hold:

ΘD(V,κ)<κ+.\Theta^{D(V,\kappa)}<\kappa^+. D(V,κ)ADR.D(V,\kappa)\models AD_{\mathbb{R}}.

This conjecture asks how a global forcing axiom such as PFA constrains the new derived model at a limit of Woodin cardinals. It concerns both the size of the derived model's Θ\Theta and whether it satisfies determinacy for games on reals; the supplied context gives no resolution status.

Progress summary

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Sources & referencesView supporting material

Primary source

Derek Levinson, Nam Trang and Trevor Wilson, “More Derived Models in PFA”, arXiv:2602.16854 (2026).

Solutions 0

No solutions have been posted yet.