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Mohammad Golshani
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I am looking for a reference for the following result:

Theorem Assume $\kappa$ is a Woodin cardinal. Then after forcing with the Levy collapse $\mathbb{P}=Col(\omega, < \kappa)$$\mathbb{P}=Col(\omega, \kappa)$, the $\Sigma^1_2$-determinacy holds in $V[G_{\mathbb{P}}]$.

Note that it suffices to show that $\Sigma^1_2$-determinacy holds in $L[\mathbb{R}]^{V[G_{\mathbb{P}}]}.$$L(\mathbb{R})^{V[G_{\mathbb{P}}]}.$

I am looking for a reference for the following result:

Theorem Assume $\kappa$ is a Woodin cardinal. Then after forcing with the Levy collapse $\mathbb{P}=Col(\omega, < \kappa)$, the $\Sigma^1_2$-determinacy holds in $V[G_{\mathbb{P}}]$.

Note that it suffices to show that $\Sigma^1_2$-determinacy holds in $L[\mathbb{R}]^{V[G_{\mathbb{P}}]}.$

I am looking for a reference for the following result:

Theorem Assume $\kappa$ is a Woodin cardinal. Then after forcing with the Levy collapse $\mathbb{P}=Col(\omega, \kappa)$, the $\Sigma^1_2$-determinacy holds in $V[G_{\mathbb{P}}]$.

Note that it suffices to show that $\Sigma^1_2$-determinacy holds in $L(\mathbb{R})^{V[G_{\mathbb{P}}]}.$

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Mohammad Golshani
  • 32.1k
  • 2
  • 99
  • 198

Determinacy and Woodin cardinals

I am looking for a reference for the following result:

Theorem Assume $\kappa$ is a Woodin cardinal. Then after forcing with the Levy collapse $\mathbb{P}=Col(\omega, < \kappa)$, the $\Sigma^1_2$-determinacy holds in $V[G_{\mathbb{P}}]$.

Note that it suffices to show that $\Sigma^1_2$-determinacy holds in $L[\mathbb{R}]^{V[G_{\mathbb{P}}]}.$