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Weighted commutators in semi-abelian categories

โœ Scribed by Gran, Marino; Janelidze, George; Ursini, Aldo


Book ID
122172078
Publisher
Elsevier Science
Year
2014
Tongue
English
Weight
346 KB
Volume
397
Category
Article
ISSN
0021-8693

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In the context of semi-abelian categories, we develop some new aspects of the categorical theory of central extensions by Janelidze and Kelly. If C is a semi-abelian category and X is any admissible subcategory we give several characterizations of trivial and central extensions. The notion of centra