Clusters, Coxeter-sortable elements and noncrossing partitions
Clusters, Coxeter-sortable elements and noncrossing partitions
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簇、Coxeter 可排序元素和非交叉分区
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发表时间:
2005
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通讯作者:
Nathan Reading
中科院分区:
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作者:
Nathan Reading
We introduce Coxeter-sortable elements of a Coxeter group For finite we give bijective proofs that Coxeter-sortable elements are equinumerous with clusters and with noncrossing partitions. We characterize Coxeter-sortable elements in terms of their inversion sets and, in the classical cases, in terms of permutations