Homology, Homotopy and Applications
Volume 6 (2004)
Galois theory and double central extensions
Pages: 283 – 298
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.
categorical Galois theory, Maltsev varieties, commutators, double central extensions
2010 Mathematics Subject Classification
08B05, 13B05, 18G50