The generalized derived model theorem for regularity of Θ

Let δ\delta be a Woodin cardinal that is a limit of Woodin cardinals. Let g?g\text{?} be VV-generic for Col(ω,<δ)\mathrm{Col}(\omega,{<}\delta), and let L(Γg,Rg)L(\Gamma^*_g,\mathbb{R}^*_g) be the derived model at δ\delta computed in V[g]V[g]. Let μα\mu_{\alpha} denote the club filter on ω1(ωα)\wp_{\omega_1}({}^{\omega}\alpha). Generalized derived model conjecture. In V(Rg)V(\mathbb{R}^*_g), both

L(ωOrd,Γg,Rg)ΘregL({}^{\omega}\operatorname{Ord},\Gamma^*_g,\mathbb{R}^*_g)\models\Theta\mathsf{reg}

and

L(ωOrd,Γg,Rg)[μααOrd]Θreg+ω1 is supercompact.L({}^{\omega}\operatorname{Ord},\Gamma^*_g,\mathbb{R}^*_g)[\langle\mu_{\alpha}\mid\alpha\in\operatorname{Ord}\rangle]\models\Theta\mathsf{reg}+\omega_1\text{ is supercompact}.

This would extend the known derived model results for AD+\mathsf{AD}^+ and supercompactness of ω1\omega_1 to stronger regularity of Θ\Theta; the paper explains that the corresponding stronger determinacy assumptions were not known to be consistent from large cardinals.

Sources & referencesView supporting material

Primary source

Takehiko Gappo, Sandra Müller and Grigor Sargsyan, “Chang models over derived models with supercompact measures”, arXiv:2307.08607 (2025).

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