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arXiv · 1302.5501

Universal central extensions in semi-abelian categories

Jose Manuel Casas·Tim Van der Linden
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Abstract

Basing ourselves on Janelidze and Kelly's general notion of central extension, 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.

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Jose Manuel Casas, Tim Van der Linden. 2013-02-22. Universal central extensions in semi-abelian categories. https://doi.org/10.1007/s10485-013-9304-0

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