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Relative commutator theory in semi-abelian categories

โœ Scribed by Tomas Everaert; Tim Van der Linden


Book ID
113740327
Publisher
Elsevier Science
Year
2012
Tongue
English
Weight
306 KB
Volume
216
Category
Article
ISSN
0022-4049

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โœ Tamar Janelidze ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Springer ๐ŸŒ English โš– 337 KB
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โœ Dominique Bourn; Marino Gran ๐Ÿ“‚ Article ๐Ÿ“… 2002 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 119 KB

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