Relative singularity categories I: Auslander resolutions
Relative singularity categories I: Auslander resolutions
复制标题
相对奇点类别 I:Auslander 决议
DOI:
10.1016/j.aim.2016.06.011
复制
发表时间:
2012-05
影响因子:
1.7
通讯作者:
Dong Yang
中科院分区:
文献类型:
--
作者:
Martin Kalck;Dong Yang
Let $R$ be an isolated Gorenstein singularity with a non-commutative resolution $A=\End_R(R\oplus M)$. In this paper, we show that the relative singularity category $\Delta_R(A)$ of $A$ has a number of pleasant properties, such as being Hom-finite. Moreover, it determines the classical singularity category $\cd_{sg}(R)$ of Buchweitz and Orlov as a certain canonical quotient category. If $R$ has finite CM type, which includes for example Kleinian singularities, then we show the much more surprising result that $\cd_{sg}(R)$ determines $\Delta_R(\Aus(R))$, where $\Aus(R)$ is the corresponding Auslander algebra. The proofs of these results use dg algebras, $A_\infty$ Koszul duality, and the new concept of dg Auslander algebras, which may be of independent interest..
登录
查看更多内容
DOI:
10.1090/s0002-9947-2013-05688-7
发表时间:
2009-12
期刊:
arXiv: Representation Theory
影响因子:
--
作者:
Weiqun Hu;Changchang Xi
通讯作者:
Weiqun Hu;Changchang Xi
DOI:
10.1007/bfb0078837
发表时间:
1987
期刊:
--
影响因子:
--
作者:
I. Reiten
通讯作者:
I. Reiten
影响因子:
0.9
作者:
A. Schofield
通讯作者:
A. Schofield
DOI:
10.11606/issn.2316-9028.v4i3p479-498
发表时间:
2010-12
期刊:
The São Paulo Journal of Mathematical Sciences
影响因子:
--
作者:
Steffen Oppermann
通讯作者:
Steffen Oppermann
影响因子:
1.8
作者:
Ø. Solberg
通讯作者:
Ø. Solberg