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Universal central extensions in semi-abelian categories

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Casas, José Manuel [Universidad de Vigo] Van der Linden, Tim [UCL]

Basing ourselves on Janelidze and Kelly’s general notion of central exten- sion, we study universal central extensions in the context of semi-abelian categories. We consider a new fundamental condition on composition of central extensions and give examples of categories which do, or do not, satisfy this condition.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès mixte
Publication date 2014
Language Anglais
Journal information "Applied Categorical Structures : a journal devoted to applications of categorical methods in algebra, analysis, order, topology and computer science" - Vol. 22, p. 253–268 (2014)
Peer reviewed yes
Publisher Springer Netherlands ((Netherlands) Dordrecht)
issn 0927-2852
e-issn 1572-9095
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
Links
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Bibliographic reference Casas, José Manuel ; Van der Linden, Tim. Universal central extensions in semi-abelian categories. In: Applied Categorical Structures : a journal devoted to applications of categorical methods in algebra, analysis, order, topology and computer science, Vol. 22, p. 253–268 (2014)
Permanent URL http://hdl.handle.net/2078.1/128238