A characterization of abelian groups
C. Chang, Andrzej Ehrenfeucht (1962)
Fundamenta Mathematicae
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C. Chang, Andrzej Ehrenfeucht (1962)
Fundamenta Mathematicae
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Julio J. Valdés (1989)
Kybernetika
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S.A. Adeleke, W.C. Holland (1994)
Forum mathematicum
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Perović, Ž. (1995)
Publications de l'Institut Mathématique. Nouvelle Série
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Ramiro H. Lafuente-Rodríguez (2007)
Czechoslovak Mathematical Journal
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We study solvability of equations of the form in the groups of order automorphisms of archimedean-complete totally ordered groups of rank 2. We determine exactly which automorphisms of the unique abelian such group have square roots, and we describe all automorphisms of the general ones.
Ján Jakubík (1990)
Czechoslovak Mathematical Journal
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