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Published in:
2004 | OriginalPaper | Chapter
Definable external sets and metamathematics of HST
Authors : Vladimir Kanovei, Michael Reeken
Published in: Nonstandard Analysis, Axiomatically
Publisher: Springer Berlin Heidelberg
Included in: Professional Book Archive
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Metamathematical studies of nonstandard theories continue in this Chapter with the aim to prove the main metamathematical properties of HST including its standard core interpretability in ZFC (Theorem 1.1.14) and internal core interpretability in BST (essentially, Theorem 3.1.10) and consequences related to conservativity etc. Section 5.1 introduces all necessary notation and presents the main results (Theorem 5.1.4 and Corollary 5.1.5).