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Extensions of Courant algebroids

Le : 22/04/2014 14h00
Par : Davide Alboresi (LAREMA)
Lieu : I 001
Lien web :
Résumé : We define and study extensions of Courant algebroids. We define a family of filtered differential complexes generalizing a construction by Roytenberg of the standard complex of a Courant algebroid, and find cohomological obstructions to the existence of extensions. Finally we classify extensions as a family of torsors over cohomology groups.