Cluster Algebras of Type D: Pseudotriangulations Approach
Cluster Algebras of Type D: Pseudotriangulations Approach
复制标题
D 型簇代数:伪三角测量方法
DOI:
--
复制
发表时间:
2015
影响因子:
0.7
通讯作者:
Vincent Pilaud
中科院分区:
文献类型:
--
作者:
Cesar Ceballos;Vincent Pilaud
We present a combinatorial model for cluster algebras of type $D_n$ in terms of centrally symmetric pseudotriangulations of a regular $2n$-gon with a small disk in the centre. This model provides convenient and uniform interpretations for clusters, cluster variables and their exchange relations, as well as for quivers and their mutations. We also present a new combinatorial interpretation of cluster variables in terms of perfect matchings of a graph after deleting two of its vertices. This interpretation differs from known interpretations in the literature. Its main feature, in contrast with other interpretations, is that for a fixed initial cluster seed, one or two graphs serve for the computation of all cluster variables. Finally, we discuss applications of our model to polytopal realizations of type $D$ associahedra and connections to subword complexes and $c$-cluster complexes.
影响因子:
0.8
作者:
Cesar Ceballos;Jean-Philippe Labbé;Christian Stump
通讯作者:
Christian Stump
DOI:
10.1016/j.ejc.2015.04.006
发表时间:
2016
期刊:
Eur. J. Comb.
影响因子:
--
作者:
Cesar Ceballos;Vincent Pilaud
通讯作者:
Vincent Pilaud
DOI:
10.1090/s0002-9947-2014-06239-9
发表时间:
2013-01
期刊:
Discrete Mathematics & Theoretical Computer Science
影响因子:
--
作者:
Cesar Ceballos;Vincent Pilaud
通讯作者:
Cesar Ceballos;Vincent Pilaud