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Integration of Highly Oscillatory Problems Through G-Functions

机译:通过G函数整合高振动问题

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Perturbed harmonic oscillators describe many models in physics and engineering. A method for solving thistype of problem is based on the utilization of Scheifele’s functions, consisting of a refinement of the Taylor series method.One disadvantage of the method is that it is difficult to determine, in each case, the recurrence relations necessary for arrivingto the solutions. In this paper we construct the numerical method especially adapted to the integration of oscillators,using developments in the form of G-functions. In addition, two computer applications related to highly oscillatory problemsare implemented, and recurrence relations are determined in each one. The results show better precision in the applicationof G-functions, compared to other known methods implemented in MAPLE V.
机译:扰动的谐波振荡器描述了物理学和工程学中的许多模型。一种解决这类问题的方法是基于Scheifele函数的利用,其中包括对Taylor级数法的改进。该方法的一个缺点是,在每种情况下都很难确定到达坐标系所需的递归关系。解决方案。在本文中,我们利用G函数形式的发展构建了一种特别适合于振荡器积分的数值方法。另外,实现了两个与高度振荡问题有关的计算机应用程序,并且在每个计算机应用程序中确定了递归关系。与在MAPLE V中实现的其他已知方法相比,结果表明G函数的应用具有更好的精度。

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