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 1601.04412math.CA
收藏

关于二阶差分方程的第二解

On Second Solutions to Second-Order Difference Equations

William C. Parke, Leonard C. Maximon

摘要:

我们研究和推导线性齐次二阶差分方程的第二解,使用各种方法,在每种情况下超越纯粹的形式解,并给出明确的第二解的表达式。本文给出了达朗贝尔降阶方法的一个新的实现,并将其应用于线性二阶递归方程。进一步,我们引入了一种迭代法来获得通解,给出了递推关系的两个线性无关多项式解。对于一个特殊的汇合型超几何函数,其标准第二解与第一解不独立,即解是退化的,我们利用相应的微分方程,应用推广的柯西积分方法,求出了差分方程的多项式第二解.我们表明,标准的达朗贝尔方法也产生这个多项式的解决方案。

英文摘要:

We investigate and derive second solutions to linear homogeneous second-order difference equations using a variety of methods, in each case going beyond the purely formal solution and giving explicit expressions for the second solution. We present a new implementation of d'Alembert's reduction of order method, applying it to linear second-order recursion equations. Further, we introduce an iterative method to obtain a general solution, giving two linearly independent polynomial solutions to the recurrence relation. In the case of a particular confluent hypergeometric function for which the standard second solution is not independent of the first, i.e. the solutions are degenerate, we use the corresponding differential equation and apply the extended Cauchy-integral method to find a polynomial second solution for the difference equation. We show that the standard d'Alembert method also generates this polynomial solution.

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。

↑