Abstract
In this paper, a system of singularly perturbed Volterra integro-differential equations is considered. The backward Euler formula is used to discretize the differential part and the right-hand rectangle rule is applied to approximate the integral term. The stabilities of the continuous and discrete solutions are carried out using the Grönwall’s inequality, respectively. The a posterior error bounds are given to design an adaptive grid generation algorithm. Numerical results complement the theoretical results.






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Acknowledgements
This work is supported by the National Science Foundation of China (11761015, 11826211), the Natural Science Foundation of Guangxi (2020GXNSFAA159010), the key project of Guangxi Natural Science Foundation (2017GXNSFDA198014, 2018GXNSFDA050014), Zhejiang Province Public Welfare Technology Application Research Project (LGF19A010001), and Ningbo Municipal Natural Science Foundation (2019A610045).
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Liang, Y., Liu, LB. & Cen, Z. A posteriori error estimation in maximum norm for a system of singularly perturbed Volterra integro-differential equations. Comp. Appl. Math. 39, 255 (2020). https://doi.org/10.1007/s40314-020-01303-7
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DOI: https://doi.org/10.1007/s40314-020-01303-7