A la manière de Pirashvili, on peut associer une cohomologie de Hochschild supérieure associée aux sphères définie pour toute algèbre commutative A et module M. Lorsque , cette cohomologie est munie d'un produit gradué commutatif, d'un crochet de Lie de degré d et d'opérations d'Adams. Ces structures sont compatibles entre elles et sont reliées à la topologie des Branes.
Following ideas of Pirashvili, we define higher order Hochschild cohomology over spheres defined for any commutative algebra A and module M. When , we prove that this cohomology is equipped with graded commutative algebra and degree d Lie algebra structures as well as with Adams operations. All operations are compatible in a suitable sense. These structures are related to Brane topology.
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@article{CRMATH_2008__346_1-2_5_0, author = {Ginot, Gr\'egory}, title = {Higher order {Hochschild} cohomology}, journal = {Comptes Rendus. Math\'ematique}, pages = {5--10}, publisher = {Elsevier}, volume = {346}, number = {1-2}, year = {2008}, doi = {10.1016/j.crma.2007.11.010}, language = {en}, url = {http://www.numdam.org/articles/10.1016/j.crma.2007.11.010/} }
Ginot, Grégory. Higher order Hochschild cohomology. Comptes Rendus. Mathématique, Tome 346 (2008) no. 1-2, pp. 5-10. doi : 10.1016/j.crma.2007.11.010. http://www.numdam.org/articles/10.1016/j.crma.2007.11.010/
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