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arXiv · 1710.01870

Pure $\Sigma_2$-Elementarity beyond the Core

Gunnar Wilken
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Abstract

We display the entire structure ${\cal R}_2$ coding $\Sigma_1$- and $\Sigma_2$-elementarity on the ordinals. This will enable the analysis of pure $\Sigma_3$-elementary substructures.

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Gunnar Wilken. 2017-10-05. Pure $\Sigma_2$-Elementarity beyond the Core. https://doi.org/10.1016/j.apal.2021.103001

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