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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(h(2m+1)). By analyzing the supercloseness between the DG solution and the interpolation Pi(h)u of the exact solution, we get the optimal order O(h(m+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. (C) 2018 Elsevier B.V. All rights reserved.
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Source :
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
ISSN: 0377-0427
Year: 2019
Volume: 348
Page: 314-327
2 . 4 0 0
JCR@2022
ESI Discipline: MATHEMATICS;
ESI HC Threshold:54
JCR Journal Grade:1
Cited Count:
WoS CC Cited Count: 5
SCOPUS Cited Count: 6
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 6
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