Deformations of algebroid stacks

Deformations of algebroid stacks
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DOI:
10.1016/j.aim.2010.10.008
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发表时间:
2008-09
期刊:
arXiv: Quantum Algebra
影响因子:
--
通讯作者:
P. Bressler;A. Gorokhovsky;R. Nest;B. Tsygan
P. Bressler;A. Gorokhovsky;R. Nest;B. Tsygan
中科院分区:
其他
文献类型:
--
作者:
P. Bressler;A. Gorokhovsky;R. Nest;B. Tsygan

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本文考虑了代数体叠在一个代数广群上的变形。我们构造了一个微分分次李代数(DGLA)来控制这个变形理论。当代数胚是函数的扭曲形式时,我们证明了这个DGLA通过相应的gerbe的特征类拟同构于群胚上函数代数上Hochschild余链的DGLA的扭曲.
In this paper we consider deformations of an algebroid stack on an étale groupoid. We construct a differential graded Lie algebra (DGLA) which controls this deformation theory. In the case when the algebroid is a twisted form of functions we show that this DGLA is quasiisomorphic to the twist of the DGLA of Hochschild cochains on the algebra of functions on the groupoid by the characteristic class of the corresponding gerbe.