arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1208.3063math.CO
收藏

一个欧拉置换统计量及其推广

An Eulerian permutation statistic and generalizations

Travis Hance, Nan Li

摘要:

最近,第二作者在凸多面体的背景下研究了一个欧拉统计量(称为覆盖),并证明了(覆盖,des)与(des,exc)的一个相等的联合分布。在本文中,我们提出了几个直接的双射证明,覆盖是欧拉,并检查其推广和他们的Mahonian合作伙伴。我们还提出了一个准对称函数证明(建议由Michelle Wachs)的上述相等的联合分布。

英文摘要:

Recently, the second author studied an Eulerian statistic (called cover) in the context of convex polytopes, and proved an equal joint distribution of (cover,des) with (des,exc). In this paper, we present several direct bijective proofs that cover is Eulerian, and examine its generalizations and their Mahonian partners. We also present a quasi-symmetric function proof (suggested by Michelle Wachs) of the above equal joint distribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑