Comptes Rendus
Differential geometry
A Hopf algebra associated with a Lie pair
[Une algèbre de Hopf associée à une paire de Lie]
Comptes Rendus. Mathématique, Volume 352 (2014) no. 11, pp. 929-933.

Le quotient L/A[1] d'une paire AL d'algébroïdes de Lie est un objet algèbre de Lie dans la catégorie dérivée Db(A) de la catégorie A des modules à gauche sur U(A). Dans cette note, nous décrivons l'algèbre enveloppante universelle de l'objet algèbre de Lie L/A[1] et nous prouvons que celle-ci constitue un objet algèbre de Hopf dans Db(A).

The quotient L/A[1] of a pair AL of Lie algebroids is a Lie algebra object in the derived category Db(A) of the category A of left U(A)-modules, the Atiyah class αL/A being its Lie bracket. In this note, we describe the universal enveloping algebra of the Lie algebra object L/A[1] and we prove that it is a Hopf algebra object in Db(A).

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2014.09.010
Zhuo Chen 1 ; Mathieu Stiénon 2 ; Ping Xu 2

1 Department of Mathematics, Tsinghua University, China
2 Department of Mathematics, Penn State University, United States
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Zhuo Chen; Mathieu Stiénon; Ping Xu. A Hopf algebra associated with a Lie pair. Comptes Rendus. Mathématique, Volume 352 (2014) no. 11, pp. 929-933. doi : 10.1016/j.crma.2014.09.010. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2014.09.010/

[1] Zhuo Chen; Mathieu Stiénon; Ping Xu From Atiyah classes to homotopy Leibniz algebras, 2012 | arXiv

[2] M. Kapranov Rozansky–Witten invariants via Atiyah classes, Compos. Math., Volume 115 (1999) no. 1, pp. 71-113 MR 1671737 (2000h:57056)

[3] Niels Kowalzig; Hessel Posthuma The cyclic theory of Hopf algebroids, J. Noncommut. Geom., Volume 5 (2011) no. 3, pp. 423-476 MR 2817646 (2012f:16081)

[4] Zhang-Ju Liu; Alan Weinstein; Ping Xu Dirac structures and Poisson homogeneous spaces, Commun. Math. Phys., Volume 192 (1998) no. 1, pp. 121-144 MR 1612164 (99g:58053)

[5] Nikita Markarian The Atiyah class, Hochschild cohomology and the Riemann–Roch theorem, J. Lond. Math. Soc. (2), Volume 79 (2009) no. 1, pp. 129-143 MR 2472137 (2010d:14020)

[6] Ajay C. Ramadoss The big Chern classes and the Chern character, Int. J. Math., Volume 19 (2008) no. 6, pp. 699-746 MR 2431634 (2010h:14028)

[7] Justin Roberts; Simon Willerton On the Rozansky–Witten weight systems, Algebr. Geom. Topol., Volume 10 (2010) no. 3, pp. 1455-1519 (MR 2661534)

[8] L. Rozansky; E. Witten Hyper–Kähler geometry and invariants of three-manifolds, Sel. Math. New Ser., Volume 3 (1997) no. 3, pp. 401-458 MR 1481135 (98m:57041)

[9] Ping Xu Quantum groupoids, Commun. Math. Phys., Volume 216 (2001) no. 3, pp. 539-581 MR 1815717 (2002f:17033)

Cité par Sources :

Research partially supported by NSF grant DMS1101827, NSA grant H98230-12-1-0234, and NSFC grants 11001146 and 11471179.

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