Exceptional Cycles in the Bounded Derived Categories of Quivers

Exceptional Cycles in the Bounded Derived Categories of Quivers
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箭袋有界派生范畴中的异常循环

DOI:
10.1007/s10114-020-9094-x
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发表时间:
2020
期刊:
Acta Mathematica Sinica, English Series
影响因子:
--
通讯作者:
Pu Zhang
Pu Zhang
中科院分区:
--
文献类型:
--
作者:
Peng Guo;Pu Zhang

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具有Serre函子的Horn-有限三角范畴中的一个特殊的n-圈最近由Broomhead,Pauksztello和Plog引入。当n=1时,它是一个球形物体。我们显式地确定了有限箭图Q的有界派生范畴DB(KQ)中的所有例外圈。特别地,如果Q是欧几里得箭图,则DB(KQ)中的例外圈的长度类型正好是Q的管状类型:如果Q是Em型的动态箭图(m=6,7,8),或者Q是狂野箭图,则DB(KQ)中没有例外圈;如果Q是An或Dn型的动态箭图,则Db(Kq)中异常循环的长度为h或\DocumentClass[12pt]{Minimum}\usepackage{amsath}\usepackage{waysym}\usepackage{amsFonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{matrsfs}\usepackage{upgreek}\setlong{\oddsidemarin}{-69pt}\begin{document}$$\frac{h}{2}$$\end{document},其中h是Q的Coxeter数。
An exceptional n-cycle in a Horn-finite triangulated category with Serre functor has been recently introduced by Broomhead, Pauksztello and Ploog. When n = 1, it is a spherical object. We explicitly determine all the exceptional cycles in the bounded derived category Db (kQ) of a finite quiver Q without oriented cycles. In particular, if Q is an Euclidean quiver, then the length type of exceptional cycles in Db (kQ) is exactly the tubular type of Q; if Q is a Dynkin quiver of type Em (m = 6, 7, 8), or Q is a wild quiver, then there are no exceptional cycles in Db (kQ); and if Q is a Dynkin quiver of type An or Dn, then the length of an exceptional cycle in Db (kQ) is either h or \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\frac{h}{2}$$\end{document}, where h is the Coxeter number of Q.
DOI: 10.1007/s00209-016-1690-1
发表时间: 2013-12
影响因子: 0.8
作者:
Nathan Broomhead;David Pauksztello;D. Ploog
通讯作者: Nathan Broomhead;David Pauksztello;D. Ploog
DOI: 10.48550/arxiv.1502.06838
发表时间: 2015
期刊: arXiv e-prints
影响因子: --
作者:
Hochenegger Andreas
通讯作者: Hochenegger Andreas