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Preprint Number 1074
1074. Matthias Aschenbrenner, Lou van den Dries, Joris van der Hoeven Dimension in the realm of transseries E-mail: Submission date: 25 July 2016 Abstract: Let T be the differential field of transseries. We establish some basic properties of the dimension of a definable subset of T^n, also in relation to its codimension in the ambient space T^n. The case of dimension 0 is of special interest, and can be characterized both in topological terms (discreteness) and in terms of the Herwig-Hrushovski-Macpherson notion of co-analyzability. The proofs use results by the authors from Asymptotic Differential Algebra and Model Theory of Transseries, the axiomatic framework for dimension in [L. van den Dries, "Dimension of definable sets, algebraic boundedness and Henselian fields", Ann. Pure Appl. Logic 45 (1989), no. 2, 189-209], and facts about co-analyzability from [B. Herwig, E. Hrushovski, D. Macpherson, Interpretable groups, stably embedded sets, and Vaughtian pairs, J. London Math. Soc. (2003) 68, no. 1, 1-11]. Mathematics Subject Classification: Keywords and phrases: |
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