Bender-Knuth involution;
Berenstein-Kirillov group;
Linear extension;
Cactus group;
CONJECTURE;
D O I:
10.1016/j.disc.2024.114068
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
We study the permutation group BKP generated by Bender-Knuth moves on linear extensions of a poset P , an analog of the Berenstein-Kirillov group on column-strict tableaux. We explore the group relations, with an emphasis on identifying posets P for which the cactus relations hold in BKP. We also examine BKP as a subgroup of the symmetric group S L( P ) on the set of linear extensions of P with the focus on analyzing posets P for which BKP = S L( P ) . (c) 2024 Elsevier B.V. All rights reserved.