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arXiv · 2409.14211

Permutation Models of Second Order

Christine Gaßner
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Abstract

G\"unter Asser (1981) introduced second-order permutation models. In this way, the Fraenkel-Mostowski-Specker method for defining models of ZFA was transferred to a new application area. To investigate the strength of second-order principles of choice in second-order predicate logic (PLII) with Henkin interpretation (HPL), we have extended the Fraenkel-Mostowski-Specker-Asser method. Here we discuss many details, including some useful references. Finally, we address a question raised by Stephen Mackereth.

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Christine Gaßner. 2024-09-21. Permutation Models of Second Order. https://arxiv.org/abs/2409.14211

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