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Preprint Number 1561
1561. Martin Bays and Ya'acov Peterzil Definability in the group of infinitesimals of a compact Lie group E-mail: Submission date: 30 January 2019 Abstract: We show that for G a simple compact Lie group, the infinitesimal subgroup G^{00} is bi-intepretable with a real closed valued field. We deduce that for G an infinite definably compact group definable in an o-minimal expansion of a field, G^{00} is bi-interpretable with the disjoint union of a (possibly trivial) ℚ-vector space and finitely many (possibly zero) real closed valued fields. Mathematics Subject Classification: 03C64, 22E15 Keywords and phrases: |
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