arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.07771math.CO
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关于Riordan数组群的中心刻画

On the Central Description of the Group of Riordan Arrays

Paul Barry

摘要:

我们提供了一个替代的描述组的Riordan阵列,通过使用两个幂级数的形式$\sum_{n=0}^{\infty} g_n x^n$,其中$g_0 \ne 0$,以建立一个典型的元素的构造组。我们将这些元素与通常描述中的Riordan数组联系起来,表明每个新构造的元素都是“通常”元素的垂直一半。产品的规则和建设的逆给出了这个新的描述,我们称之为“中心”的描述,因为链接到中心系数的Riordan阵列。这是对普通生成函数的情况。最后,我们简单地看看指数情况。

英文摘要:

We provide an alternative description of the group of Riordan arrays, by using two power series of the form $\sum_{n=0}^{\infty} g_n x^n$, where $g_0 \ne 0$ to build a typical element of the constructed group. We relate these elements to Riordan arrays in the usual description, showing that each newly constructed element is the vertical half of a "usual" element. The product rules and the construction of the inverse are given in this new description, which we call a "central" description, because of links to the central coefficients of Riordan arrays. This is done for the case of ordinary generating functions. Finally, we briefly look at the exponential case.

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。

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