no. 11
Homological algebra/Mathematical physics
The obstruction to the existence of a loopless star product

Présenté par : Michèle Vergne

Willwacher, Thomas1
1 Department of Mathematics, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
Comptes Rendus. Mathématique, Tome 352 (2014) no. 11, pp. 881-883.

Nous montrons qu'il y a une obstruction à l'éxistence d'une produit étoile défini par les graphes de Kontsevich sans cycle orienté.

We show that there is an obstruction to the existence of a star product defined by Kontsevich graphs without directed cycles.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2014.09.018
Willwacher, Thomas 1

1 Department of Mathematics, University of Zurich, Winterthurerstrasse 190, 8057 Zürich, Switzerland 
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Willwacher, Thomas. The obstruction to the existence of a loopless star product. Comptes Rendus. Mathématique, Tome 352 (2014) no. 11, pp. 881-883. doi : 10.1016/j.crma.2014.09.018. http://www.numdam.org/articles/10.1016/j.crma.2014.09.018/

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