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arXiv 0906.3422math.RT
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Dynkin型E簇倾斜代数的导出等价分类

Derived equivalence classification of the cluster-tilted algebras of Dynkin type E

Janine Bastian, Thorsten Holm, Sefi Ladkani

摘要:

我们得到了Dynkin型E的簇倾斜代数的一个完全的导出等价分类。E6、E7和E8型代数分别有67、416、1574个,它们分别属于6、14、15个导出等价类。这种分类可以通过计算来实现,我们概述了一种算法,它已经实现了执行这项任务。我们还作出明确的分类标准式为每个派生的等价类以及完整的列表中所载的代数在每个类;因为这些名单是相当长的,他们作为补充材料提供给本文。从结构的角度来看,显着的结果,我们的分类是,两个集群倾斜代数Dynkin型E导出等价的当且仅当他们的Cartan矩阵表示等价的双线性型的整数,这反过来又发生当且仅当两个代数连接的一系列“好”的突变。这让人想起派生的等价分类集群倾斜代数Dynkin型A,但完全不同的情况下,Dynkin型D的一个深远的分类已获得使用类似的方法,在本文中,但一些非常微妙的问题仍然是开放的。

英文摘要:

We obtain a complete derived equivalence classification of the cluster-tilted algebras of Dynkin type E. There are 67, 416, 1574 algebras in types E6, E7 and E8 which turn out to fall into 6, 14, 15 derived equivalence classes, respectively. This classification can be achieved computationally and we outline an algorithm which has been implemented to carry out this task. We also make the classification explicit by giving standard forms for each derived equivalence class as well as complete lists of the algebras contained in each class; as these lists are quite long they are provided as supplementary material to this paper. From a structural point of view the remarkable outcome of our classification is that two cluster-tilted algebras of Dynkin type E are derived equivalent if and only if their Cartan matrices represent equivalent bilinear forms over the integers which in turn happens if and only if the two algebras are connected by a sequence of "good" mutations. This is reminiscent of the derived equivalence classification of cluster-tilted algebras of Dynkin type A, but quite different from the situation in Dynkin type D where a far-reaching classification has been obtained using similar methods as in the present paper but some very subtle questions are still open.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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