Article ID Journal Published Year Pages File Type
10224200 Journal of Computational and Applied Mathematics 2019 22 Pages PDF
Abstract
In this paper, we investigate the local superconvergence of the discontinuous Galerkin (DG) solutions on quasi-graded meshes for nonlinear delay differential equations with vanishing delay. It is shown that the optimal order of the DG solution at the mesh points is O(h2m+1). By analyzing the supercloseness between the DG solution and the interpolation Πhu of the exact solution, we get the optimal order O(hm+2) of the DG solution at characteristic points. We then extend the convergence results of DG solutions to state dependent delay differential equations. Numerical examples are provided to illustrate the theoretical results.
Related Topics
Physical Sciences and Engineering Mathematics Applied Mathematics
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