Geodesic
Abelian groups which have trivial absolute coGalois group
Czechoslovak Mathematical Journal, Tome 55 (2005) no. 2, pp. 433-437.

Voir la notice de l'article provenant de la source Czech Digital Mathematics Library

In this article we characterize those abelian groups for which the coGalois group (associated to a torsion free cover) is equal to the identity.
Classification : 13C11, 16D10, 16G20, 20K30, 20K40
Keywords: group; cover; torsion free 
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     title = {Abelian groups which have trivial absolute {coGalois} group},
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     pages = {433--437},
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Enochs, Edgar E.; Rada, Juan. Abelian groups which have trivial absolute coGalois group. Czechoslovak Mathematical Journal, Tome 55 (2005) no. 2, pp. 433-437. http://geodesic.mathdoc.fr/item/CMJ_2005__55_2_a12/