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Preprint Number 267
267. Mário Edmundo On the Euler characteristic of definable groups. E-mail: Submission date: 4 August 2010. Abstract: We show that in an arbitrary o-minimal structure the following are equivalent: (i) conjugates of a definable subgroup of a definably connected, definably compact definable group cover the group if the o-minimal Euler characteristic of the quotient is non zero; (ii) every infinite, definably connected, definably compact definable group has a non trivial torsion point. Mathematics Subject Classification: 03C64, 55N30. Keywords and phrases: O-minimal structures, definable groups. |
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