Geodesic
On affine parts of algebraic theories
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 2 (1983), pp. 45-49

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We introduce and study two properties connected with interrelations of an algebraic theory and its affine part. Each one of these properties characterizes varieties of modules within some classes of varieties. In particular, we find characterizations of varieties of abelian groups in the classes of varieties of groups and loops. 
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     author = {I. S. Safuanov},
     title = {On affine parts of algebraic theories},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
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     number = {2},
     year = {1983},
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     url = {http://geodesic.mathdoc.fr/item/VMUMM_1983_2_a9/}
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I. S. Safuanov. On affine parts of algebraic theories. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 2 (1983), pp. 45-49. http://geodesic.mathdoc.fr/item/VMUMM_1983_2_a9/