%0 Journal Article
%T Reducts of structures and maximal-closed permutation groups
%A Manuel Bodirsky
%A Dugald Macpherson
%J Mathematics
%D 2013
%I arXiv
%X Answering a question of Junker and Ziegler, we construct a countable first order structure which is not omega-categorical, but does not have any proper non-trivial reducts, in either of two senses (model-theoretic, and group-theoretic). We also construct a strongly minimal set which is not omega-categorical but has no proper non-trivial reducts in the model-theoretic sense.
%U http://arxiv.org/abs/1310.6393v2