A skein action of the symmetric group on noncrossing partitions
A skein action of the symmetric group on noncrossing partitions
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对称群在非交叉分区上的绞纱作用
DOI:
10.1007/s10801-016-0701-y
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发表时间:
2015
影响因子:
0.8
通讯作者:
B. Rhoades
中科院分区:
文献类型:
--
作者:
B. Rhoades
We introduce and study a new action of the symmetric group $${\mathfrak {S}}_n$$Sn on the vector space spanned by noncrossing partitions of $$\{1, 2,\ldots , n\}$${1,2,…,n} in which the adjacent transpositions $$(i, i+1) \in {\mathfrak {S}}_n$$(i,i+1)∈Sn act on noncrossing partitions by means of skein relations. We characterize the isomorphism type of the resulting module and use it to obtain new representation-theoretic proofs of cyclic sieving results due to Reiner–Stanton–White and Pechenik for the action of rotation on various classes of noncrossing partitions and the action of K-promotion on two-row rectangular increasing tableaux. Our skein relations generalize the Kauffman bracket (or Ptolemy relation) and can be used to resolve any set partition as a linear combination of noncrossing partitions in a $${\mathfrak {S}}_n$$Sn-equivariant way.