Vol. 58, No. 2, 1975

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ISSN: 0030-8730
A counterexample in the theory of definable automorphisms

Martin Ziegler

Vol. 58 (1975), No. 2, 665–668
Abstract

As it is well known, the groups of definable automorphisms of two elementary equivalent relational structures satisfy the same 1-statements. We show that this does not hold in general for 2-statements, thus correcting an error in the literature.

Mathematical Subject Classification
Primary: 02H05
Milestones
Received: 27 May 1974
Published: 1 June 1975
Authors
Martin Ziegler