A skein action of the symmetric group on noncrossing partitions

作者：Rhoades Brendon^*

来源：Journal of Algebraic Combinatorics, 2017, 45(1): 81-127.

DOI：10.1007/s10801-016-0701-y

• Cyclic sieving
• Noncrossing partition
• Promotion
• Rotation
• Skein relation
• Symmetric group

We introduce and study a new action of the symmetric group on the vector space spanned by noncrossing partitions of in which the adjacent transpositions 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 -equivariant way.

• 出版日期2017-2