Geodesic
Galois theory and double central extensions
Homology, homotopy, and applications, Tome 6 (2004) no. 1, pp. 283-298.

Voir la notice de l'article provenant de la source International Press of Boston

We define a Galois structure between central extensions and extensions in a Maltsev variety. By using the theory of commutators we introduce double central extensions. We then prove that the covering morphisms relative to this Galois structure are precisely the double central extensions.
DOI : 10.4310/HHA.2004.v6.n1.a16
Classification : 08B05, 13B05, 18G50
Keywords: categorical Galois theory, Maltsev varieties, commutators, double central extensions 
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     title = {Galois theory and double central extensions},
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Marino Gran; Valentina Rossi. Galois theory and double central extensions. Homology, homotopy, and applications, Tome 6 (2004) no. 1, pp. 283-298. doi : 10.4310/HHA.2004.v6.n1.a16. http://geodesic.mathdoc.fr/articles/10.4310/HHA.2004.v6.n1.a16/

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