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Can I read Central Extensions in Semi-abelian Categories on EtoBox?
Central Extensions in Semi-abelian Categories by Dominique Bourn; Marino Gran is a Mathematics article available to read on EtoBox.
What is Central Extensions in Semi-abelian Categories about?
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 central extension becomes intrinsic when X is the subcategory of the abelian objects in C. We apply these results to the category of internal groupoids in a semi-abelian category. As a very special case, we get the known description of central extensions for crossed modules.
Who reads Central Extensions in Semi-abelian Categories?
It is typically read by researchers, students, and practitioners in Mathematics.
- Author
- Dominique Bourn; Marino Gran
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-4049)
- Published
- 2002
- Language
- EN
- Field
- Mathematics (Physical Sciences)