Strong Exceptional Sequences Provided by Quivers

Strong Exceptional Sequences Provided by Quivers
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Quivers 提供的强大的异常序列

DOI:
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
L. Hille
L. Hille
中科院分区:
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文献类型:
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作者:
K. Altmann;L. Hille

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设Q是一个没有定向圈的有限环。用U → U(Q)表示Q的稳定薄真诚表示的精细模空间,关于正则稳定性概念。证明了对所有l > 0,Ext ∈(Q)l(U,U)= 0,并计算了泛丛U的自同态代数.此外,我们得到了一个充要条件时,这个代数同构的道路代数的Q。如果是这样,那么由k生成的右k Q-模的有界导范畴和由k生成的右k Q-模的有界导范畴与k(Q)上的凝聚层的有界导范畴通过完全忠实函子− k QL U联系起来。
Let Q be a finite quiver without oriented cycles. Denote by U → ℳ(Q) the fine moduli space of stable thin sincere representations of Q with respect to the canonical stability notion. We prove Extℳ(Q)l (U, U) = 0 for all l > 0 and compute the endomorphism algebra of the universal bundle U. Moreover, we obtain a necessary and sufficient condition for when this algebra is isomorphic to the path algebra of the quiver Q. If so, then the bounded derived categories of finitely generated right k Q-modules and that of coherent sheaves on ℳ(Q) are related via the full and faithful functor − ⊗kQL U.