%0 Journal Article
%T On the number of automorphism of uncontable models
%A Saharon Shelah
%A Heikki Tuuri
%A Jouko V£¿£¿n£¿nen
%J Mathematics
%D 1993
%I arXiv
%X Let s(A) denote the number of automorphisms of a model A of power omega_1. We derive a necessary and sufficient condition in terms of trees for the existence of an A with omega_1 < s(A) < 2^{omega_1}. We study the sufficiency of some conditions for s(A)=2^{omega_1}. These conditions are analogous to conditions studied by D.Kueker in connection with countable models.
%U http://arxiv.org/abs/math/9301205v1