hal-00334292, version 1
Quadratic functors on pointed categories
Résumé : We study polynomial functors of degree 2, called quadratic, with values in the category of abelian groups Ab, and whose source category is an arbitrary category C with null object such that all objects are finite coproducts of a generating object E. A functorial equivalence is established between quadratic functors from C to Ab and certain minimal algebraic data. Applying this general result to the case where E is a cogroup these data take a particulary simple form. This application extends results of Baues and Pirashvili obtained for C being the category of free groups or modules of finite rank.
- 1 :
- Université de Valenciennes et du Hainaut-Cambresis – CNRS : FRE2956
- 2 :
- CNRS : UMR7501 – Université Louis Pasteur - Strasbourg I
- Domaine : Mathématiques/Topologie algébrique
Mathématiques/Catégories et ensembles
Mathématiques/Théorie des groupes - Commentaire : 44 pages
- Versions disponibles : v1 (24-10-2008) v2 (11-11-2008) v3 (21-10-2009)
- hal-00334292, version 1
- http://hal.archives-ouvertes.fr/hal-00334292
- oai:hal.archives-ouvertes.fr:hal-00334292
- Contributeur :
- Soumis le : Vendredi 24 Octobre 2008, 17:45:11
- Dernière modification le : Vendredi 24 Octobre 2008, 18:42:55





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