论文标题
表面群集代数扩展公式通过循环图
Surface cluster algebra expansion formulae via loop graphs
论文作者
论文摘要
2011年,席夫勒(Musiker),席夫勒(Schiffler)和威廉姆斯(Williams)从可定向表面获得了群集代数的扩展公式。对于单一且双重的弧线,这些公式需要$γ$ - 符号对称的完美匹配和$γ$ - 稳定的对$γ$ - 对称的完美匹配。我们通过考虑循环图的良好匹配来简化和统一这些方法。
In 2011 Musiker, Schiffler and Williams obtained expansion formulae for cluster algebras from orientable surfaces. For singly and doubly notched arcs these formulae required the notion of $γ$-symmetric perfect matchings and $γ$-compatible pairs of $γ$-symmetric perfect matchings, respectively. We simplify and unify these approaches by considering good matchings of loop graphs.