Central extensions in universal algebra: a unification of three notions <
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We compare the categorical notion of central extension introduced in an earlier paper of ours, which generalized that used previously in non-abelian homological algebra by Fröhlich and Lue, with the notion of centrality arising from commutator theory in universal algebra, showing that they agree in the most important cases.
KeywordsEarly Paper Important Case Central Extension Universal Algebra Homological Algebra
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