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arXiv 1503.03531math.RTmath.QAmath.RA
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扭曲张量积的Hochschild上同调的Gerstenhaber括号

Gerstenhaber brackets on Hochschild cohomology of twisted tensor products

Lauren Grimley, Van C. Nguyen, Sarah Witherspoon

摘要:

我们构造了一个扭曲的张量积的代数的Hochschild上同调的Gerstenhaber括号,并作为例子,计算Gerstenhaber括号的Buchweitz,Green,Madsen和Solberg的工作中产生的一些量子完全相交。证明了扭曲张量积的Hochschild上同调环的一个子代数(其上扭曲是平凡的)与因子的Hochschild上同调环的各个子代数的张量积同构,就像Gerstenhaber代数一样。

英文摘要:

We construct the Gerstenhaber bracket on Hochschild cohomology of a twisted tensor product of algebras, and, as examples, compute Gerstenhaber brackets for some quantum complete intersections arising in work of Buchweitz, Green, Madsen, and Solberg. We prove that a subalgebra of the Hochschild cohomology ring of a twisted tensor product, on which the twisting is trivial, is isomorphic, as Gerstenhaber algebras, to the tensor product of the respective subalgebras of the Hochschild cohomology rings of the factors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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