The Hochschild complex of a finite tensor category
The Hochschild complex of a finite tensor category
复制标题
有限张量范畴的 Hochschild 复形
DOI:
--
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发表时间:
2019
影响因子:
0.7
通讯作者:
Lukas Woike
中科院分区:
文献类型:
--
作者:
C. Schweigert;Lukas Woike
We express the Hochschild complex of a finite tensor category using a specific projective resolution of the canonical coend of the finite tensor category. This leads to our main result that the Hochschild complex of a not necessarily semisimple modular category carries a canonical homotopy coherent projective action of the mapping class group $\text{SL}(2,\mathbb{Z})$ of the torus. This supports the idea to think of the Hochschild complex of a modular category as a derived conformal block for the torus. In the semisimple case, the (underived) conformal block is known to carry a commutative multiplication. For the derived conformal block (i.e. in the non-semisimple case), we generalize this to an $E_2$-structure. Our results allow us obtain a notion of Hochschild chains for braided crossed monoidal categories in the sense of Turaev. We prove that these admit an action of an operad built from Hurwitz spaces.
DOI:
10.4310/hha.2020.v22.n1.a3
发表时间:
2020
期刊:
Homology, Homotopy and Applications
影响因子:
--
作者:
Müller L
通讯作者:
Müller L