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arXiv 1105.5673math.RT
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Schiffler展开式的模论解释

A module-theoretic interpretation of Schiffler's expansion formula

Thomas Brüstle, Jie Zhang

摘要:

为了得到标记曲面(S,M)的簇代数中簇变量的展开式,我们给出了Schiffler展开式的模论解释,该展开式是用完全(T,r)-路组合定义的.在对标记曲面(S,M)的簇范畴的不可分解对象进行几何描述的基础上,证明了Schiffler-Thomas展开式与Palu定义的簇特征标的一致性。

英文摘要:

We give a module-theoretic interpretation of Schiffler's expansion formula which is defined combinatorially in terms of complete (T,r)-paths in order to get the expansion of the cluster variables in the cluster algebra of a marked surface (S,M). Based on the geometric description of the indecomposable objects of the cluster category of the marked surface (S,M), we show the coincidence of Schiffler-Thomas' expansion formula and the cluster character defined by Palu.

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