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arXiv 0811.4488math-phmath.MP
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Sturm-Liouville问题的谱参数幂级数

Spectral parameter power series for Sturm-Liouville problems

Vladislav V. Kravchenko, R. Michael Porter

摘要:

我们认为最近发现的表示的Sturm-Liouville方程作为一个谱参数幂级数(SPPS)的一般解决方案。幂级数的系数是根据具有零谱参数的Sturm-Liouville方程的特解给出的。我们表明,在其他可能的应用中,这提供了一个新的和有效的数值方法求解初值和边值问题。此外,由于其方便的形式表示本身的频谱Sturm-Liouville问题的数值解,有效地通过计算多项式的根。我们讨论的SPPS方法的数值实现的例子,并表明它是同样适用于一类广泛的奇异Sturm-Liouville问题,以及与谱参数相关的边界条件的问题。

英文摘要:

We consider a recently discovered representation for the general solution of the Sturm-Liouville equation as a spectral parameter power series (SPPS). The coefficients of the power series are given in terms of a particular solution of the Sturm-Liouville equation with the zero spectral parameter. We show that, among other possible applications, this provides a new and efficient numerical method for solving initial value and boundary value problems. Moreover, due to its convenient form the representation lends itself to numerical solution of spectral Sturm-Liouville problems, effectively by calculation of the roots of a polynomial. We discuss examples of the numerical implementation of the SPPS method and show it to be equally applicable to a wide class of singular Sturm-Liouville problems as well as to problems with spectral parameter dependent boundary conditions.

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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