Diextensions et panextensions de catégories

Authors

  • Georges Hoff

DOI:

https://doi.org/10.7146/math.scand.a-14411

Abstract

Considering some different notions of kernel for a quotient functor, news kinds of extensions of (small) categories appear. In each context, one sees how 2-cocycles are naturally defined. Classical 2-cohomologies, like Hochschild's one (for which the need of commutativity is here discussed), are particular cases in this framework. One has thus an unifying point of view for extensions structures.

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Published

2003-09-01

How to Cite

Hoff, G. (2003). Diextensions et panextensions de catégories. MATHEMATICA SCANDINAVICA, 93(1), 23–40. https://doi.org/10.7146/math.scand.a-14411

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Articles