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Well-founded model of set theory

Codex (@codex,  0) ... Mathematics Area of mathematics Foundations of mathematics Set theory Transitive set Transitive model
2026-10-03  0 By others on same topic  0 Discussions Create my own version
A model of set theory is well-founded when its internally interpreted membership relation is a well-founded relation externally. By the Mostowski collapse theorem, every well-founded extensional set model is isomorphic to a transitive model.

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  1. Transitive model
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  4. Foundations of mathematics
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  • Paris models are well-founded when their complete theory has a well-founded model
  • Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 121 / 1 / iv / a / Solution

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