arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.5490math.CO
收藏

不变数三角形、特征三角形与Somos-4序列

Invariant number triangles, eigentriangles and Somos-4 sequences

Paul Barry

摘要:

使用语言的Riordan阵列,我们看看两个相关的迭代过程中的矩阵,并确定哪些矩阵是不变的这些过程。在特殊情况下,出现的不变序列被证明具有服从Somos-4递归的汉克尔变换。一个数三角形的特征三角形的概念出现,并给出了例子,包括竹内数的建设。

英文摘要:

Using the language of Riordan arrays, we look at two related iterative processes on matrices and determine which matrices are invariant under these processes. In a special case, the invariant sequences that arise are conjectured to have Hankel transforms that obey Somos-4 recurrences. A notion of eigentriangle for a number triangle emerges and examples are given, including a construction of the Takeuchi numbers.

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。

↑