Singularity categories of gentle algebras

Singularity categories of gentle algebras
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DOI:
10.1112/blms/bdu093
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发表时间:
2012-07
影响因子:
0.9
通讯作者:
Martin Kalck
Martin Kalck
中科院分区:
数学3区
文献类型:
--
作者:
Martin Kalck

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我们确定了任意有限维温和代数Λ的奇异范畴。它是A1型n -簇类的有限积。等价地,它可以被描述为一个自内射温和代数的稳定模范畴。如果Λ是由未穿孔的标记黎曼曲面的三角剖分T产生的雅可比代数,则因子的数量等于T的内三角形的数量。
We determine the singularity category of an arbitrary finite‐dimensional gentle algebra Λ . It is a finite product of n ‐cluster categories of type A1 . Equivalently, it may be described as the stable module category of a self‐injective gentle algebra. If Λ is a Jacobian algebra arising from a triangulation T of an unpunctured marked Riemann surface, then the number of factors equals the number of inner triangles of T .