Multiplicative preprojective algebras are 2-Calabi–Yau
Multiplicative preprojective algebras are
2-Calabi–Yau
复制标题
乘法原投影代数是
DOI:
10.2140/ant.2023.17.831
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
T. Schedler
中科院分区:
文献类型:
--
作者:
Daniel Kaplan;T. Schedler
We prove that multiplicative preprojective algebras, defined by Crawley-Boevey and Shaw, are 2-Calabi-Yau algebras, in the case of quivers containing unoriented cycles. If the quiver is not itself a cycle, we show that the center is trivial, and hence the Calabi-Yau structure is unique. If the quiver is a cycle, we show that the algebra is a non-commutative crepant resolution of its center, the ring of functions on the corresponding multiplicative quiver variety with a type A surface singularity. We also prove that the dg versions of these algebras (arising as certain Fukaya categories) are formal. We conjecture that the same properties hold for all non-Dynkin quivers, with respect to any extended Dynkin subquiver (note that the cycle is the type A case). Finally, we prove that multiplicative quiver varieties-for all quivers-are formally locally isomorphic to ordinary quiver varieties. In particular, they are all normal and have rational Gorenstein singularities. This includes character varieties of Riemann surfaces with punctures and monodromy conditions.
登录
查看更多内容
DOI:
--
发表时间:
2015
期刊:
--
影响因子:
--
作者:
C. Braun
通讯作者:
C. Braun
DOI:
10.48550/arxiv.1909.12545
发表时间:
2019
期刊:
--
影响因子:
--
作者:
Bellamy G
通讯作者:
Bellamy G
DOI:
10.1112/jlms/jdp073
发表时间:
2010
期刊:
Journal of the London Mathematical Society
影响因子:
--
作者:
Chuang J
通讯作者:
Chuang J
DOI:
10.1007/s00029-021-00647-0
发表时间:
2021
期刊:
Selecta Mathematica
影响因子:
--
作者:
Bellamy G
通讯作者:
Bellamy G
影响因子:
0.8
作者:
Kaplan D
通讯作者:
Kaplan D