arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.00193math.RTmath.COmath.RA
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逆等价与DG-稳定组合数学

Perverse Equivalences and Dg-stable Combinatorics

Jeremy Brightbill

摘要:

Chuang和Rouquier通过卡-丘维数为$-1$的三角范畴的基集合上的逆等价描述了一个作用。我们开发了一个类似的卡-丘范畴的维数$w<0$的理论,并表明它是等价的突变理论的$w$ -头脑简单的系统。给定一个非正分次的有限维对称代数$A$,证明了$A$的微分分次稳定范畴具有负的Calabi-Yau维数.当$A$是Brauer树代数时,我们构造了dg-稳定范畴的一个组合模型,并证明了反常等价作用于$|w|$ -基集上的传递性.

英文摘要:

Chuang and Rouquier describe an action by perverse equivalences on the set of bases of a triangulated category of Calabi-Yau dimension $-1$. We develop an analogue of their theory for Calabi-Yau categories of dimension $w<0$ and show it is equivalent to the mutation theory of $w$-simple-minded systems. Given a non-positively graded, finite-dimensional symmetric algebra $A$, we show that the differential graded stable category of $A$ has negative Calabi-Yau dimension. When $A$ is a Brauer tree algebra, we construct a combinatorial model of the dg-stable category and show that perverse equivalences act transitively on the set of $|w|$-bases.

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