首页> 外文期刊>Discrete Applied Mathematics >Riordan group involutions and the Delta-sequence
【24h】

Riordan group involutions and the Delta-sequence

机译:Riordan群对合和Delta序列

获取原文
获取原文并翻译 | 示例
           

摘要

Several important combinatorial arrays, after inserting some minus signs, turn out to be involutions when considered as lower triangular matrices. Among these are the Pascal, RNA, and directed animal matrices. These examples and many others are in the Bell subgroup of the Riordan group. We characterize all such pseudo-involutions by means of a single sequence called the Delta-sequence. Finally we compute the Delta-sequences for the powers of a pseudo-involution in the Bell subgroup.
机译:插入一些减号后,几个重要的组合数组在被视为下三角矩阵时被证明是对合。其中包括帕斯卡(Pascal),RNA和定向动物基质。这些示例以及许多其他示例位于Riordan组的Bell子组中。我们通过称为Delta序列的单个序列来刻画所有这些伪对合。最后,我们为贝尔子组中的伪对合的幂计算了Delta序列。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号