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arxiv: math/0502265 · v1 · submitted 2005-02-13 · 🧮 math.LO

The Theory of Sets of Ordinals

classification 🧮 math.LO
keywords theoryordinalsnaturalsetsaxiomatizingclassconstructibilitycorresponds
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We propose a natural theory SO axiomatizing the class of sets of ordinals in a model of ZFC set theory. Both theories possess equal logical strength. Constructibility theory in SO corresponds to a natural recursion theory on ordinals.

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