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Preprint Number 266
266. Mário Edmundo, Gareth O. Jones and Nicholas Peatfield Invariance results for definable extensions of groups. E-mail: Submission date: 4 August 2010. Abstract: We show that in an o-minimal expansion of an ordered group finite definable extensions of a definable group which is defined in a reduct are already defined in the reduct. A similar result is proved for finite topological extensions of definable groups defined in o-minimal expansions of the ordered set of real numbers. Mathematics Subject Classification: 03C64, 20E99 Keywords and phrases: O-minimal structures, definable groups. |
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