Abstract:Collocation with triquadratic C 1 -splines for a singularly perturbed reaction-diffusion problem in three dimension is studied. A posteriori error bound in the maximum norm is derived for the collocation method on arbitrary tensor-product meshes which is robust in the perturbation parameter. Numerical results are presented that support our theoretical estimate. KEYWORDS a posteriori error bound, collocation method, Green's function, maximum norm, reaction-diffusion problems, singular perturbation 1 * 2 q] [i]
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