Braided Hochschild cohomology and Hopf actions
Braided Hochschild cohomology and Hopf actions
复制标题
辫状 Hochschild 上同调和 Hopf 作用
DOI:
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发表时间:
2015
影响因子:
0.9
通讯作者:
C. Negron
中科院分区:
文献类型:
--
作者:
C. Negron
We show that the braided Hochschild cohomology, of an algebra in a suitably algebraic braided monoidal category, admits a graded ring structure under which it is braided commutative. We then give a canonical identification between the usual Hochschild cohomology ring of a smash product and the (derived) invariants of its braided Hochschild cohomology ring. We apply our results to identify the associative formal deformation theory of a smash product with its formal deformation theory as a module algebra over the given Hopf algebra (when the Hopf algebra is sufficiently semisimple). As a second application we deduce some structural results for the usual Hochschild cohomology of a smash product, and discuss specific implications for finite group actions on smooth affine schemes.
影响因子:
1.7
作者:
Brodzki J
通讯作者:
Brodzki J