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A numerical treatment to the solution of quasiparabolic partial differential equations. (English) Zbl 0778.65067
Summary: This paper presents results obtained by the implementation of a hybrid Laplace transform finite element method to the solution of a quasiparabolic problem. The present method removes the time derivatives from the quasiparabolic partial differential equation using the Laplace transform and then solves the associated equation with the finite element method. The numerical inverse of the Laplace transform is realized by solving linear overdetermined systems and a polynomial equation of the $$k$$-th order. Test examples are used to show that the numerical solution is comparable to the exact solution of the initial-boundary value problem at the given grid points.
##### MSC:
 65M60 Finite element, Rayleigh-Ritz and Galerkin methods for initial value and initial-boundary value problems involving PDEs 65R10 Numerical methods for integral transforms 44A10 Laplace transform 35A22 Transform methods (e.g., integral transforms) applied to PDEs 35K15 Initial value problems for second-order parabolic equations
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