中文

关于秩二无环簇代数的簇变量

组合数学 2010-08-13 v2

摘要

本文找到了与矩阵(0c c0)\left(\begin{array}{cc} 0 & c \ -c & 0 \end{array}\right)相关的无系数秩二簇代数的簇变量的洛朗展开显式公式,并证明了大量系数是非负的。作为推论,我们得到了相应箭图格拉斯曼流形的欧拉-庞加莱特征的显式表达式。

关键词

引用

@article{arxiv.1008.1829,
  title  = {On cluster variables of rank two acyclic cluster algebras},
  author = {Kyungyong Lee},
  journal= {arXiv preprint arXiv:1008.1829},
  year   = {2010}
}

备注

10 pages, thanks to referees, typos corrected, credits given, references added, follow-up is given in "Strong sign-coherency of certain symmetric polynomials, with application to cluster algebras" (arxiv preprint)