Sinc-Galerkin solution to eighth-order boundary value problems. (English) Zbl 1420.65081
Summary: Many problems that arise in astrophysics, hydrodynamic and hydromagnetic stability, fluid dynamics, astronomy, beam and long wave theory are modeled as eighth-order boundary-value problems. In this paper we show that the sinc-Galerkin method is an efficient and accurate numerical scheme for solving these problems. The inner product approximations to eighth and seventh order derivatives and the corresponding error estimates are derived. Compared to the non-polynomial spline technique and the reproducing kernel space method, we show that the sinc-Galerkin method provides more accurate results. In addition, for problems with singular solutions or singular source functions, the sinc-Galerkin method is shown to maintain the exponential convergence rate.
MSC:
| 65L60 | Finite element, Rayleigh-Ritz, Galerkin and collocation methods for ordinary differential equations |
| 65L10 | Numerical solution of boundary value problems involving ordinary differential equations |
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