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Preprint Number 1473

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1473. Tim Campion, Greg Cousins, Jinhe Ye
Classifying spaces and the Lascar group

Submission date: 14 August 2018


We show that the Lascar group Gal_L(T) of a first order theory T is naturally isomorphic to the fundamental group π_1(|Mod(T)|) of the classifying space of the category of models of T and elementary embeddings.

Mathematics Subject Classification:

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Full text arXiv 1808.04915: pdf, ps.

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