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Preprint Number 264
264. Ludomir Newelski Model theoretic aspects of the Ellis semigroup E-mail: Submission date: Abstract: Let G be a group definable in a theory T. For every model M of T, the space S_G(M) of the complete G-types over M is a G^M-flow. We compare the Ellis semigroups related to the flows S_G(M) and S_G(N) when M \prec N, focusing particularly on the groups into which the minimal left ideals in these semigroups split. In the case where T is an o-minimal expansion of the theory of reals and G is definably compact we show that these groups are isomorphic to the quotient group G/G^{00}. Mathematics Subject Classification: Keywords and phrases: Full text: pdf.
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