Involutions under Bruhat order and labeled Motzkin paths
Involutions under Bruhat order and labeled Motzkin paths
复制标题
Bruhat 阶下的对合和标记的 Motzkin 路径
DOI:
10.1016/j.ejc.2022.103513
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发表时间:
2022
影响因子:
1
通讯作者:
Hamaker, Zachary
中科院分区:
文献类型:
--
作者:
Coopman, Michael;Hamaker, Zachary
In this note, we introduce a statistic on Motzkin paths that describes the rank generating function of Bruhat order for involutions. Our proof relies on a bijection introduced by P. Biane from permutations to certain labeled Motzkin paths and a recently introduced interpretation of this rank generating function in terms of visible inversions. By restricting our identity to fixed-point-free (FPF) involutions, we recover an identity due to L. Billera, L. Levine and K. Mészáros with a previous bijective proof by M. Watson. Our work sheds new light on the Ethiopian dinner game.
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影响因子:
1.1
作者:
M. Barnabei;F. Bonetti;M. Silimbani
通讯作者:
M. Silimbani
DOI:
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发表时间:
1993
期刊:
影响因子:
--
作者:
P. Biane
通讯作者:
P. Biane
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
R. S. Deodhar;Murali K. Srinivasan
通讯作者:
Murali K. Srinivasan
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
F. Incitti
通讯作者:
F. Incitti