Geodesic
On the Definability of Completely Decomposable Torsion-Free Abelian Groups by Endomorphism Rings and Some Groups of Homomorphisms
Matematičeskie zametki, Tome 101 (2017) no. 4, pp. 576-581.

Voir la notice de l'article provenant de la source Math-Net.Ru

In the present paper, we describe conditions on a vector group $C$ which are necessary and sufficient for the class of completely decomposable torsion-free Abelian groups to be a $_CEH$-class.
Keywords: completely decomposable Abelian group, group of homomorphisms, endomorphism ring, definability of Abelian groups. 
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T. A. Pushkova; A. M. Sebel'din. On the Definability of Completely Decomposable Torsion-Free Abelian Groups by Endomorphism Rings and Some Groups of Homomorphisms. Matematičeskie zametki, Tome 101 (2017) no. 4, pp. 576-581. http://geodesic.mathdoc.fr/item/MZM_2017_101_4_a6/

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