ABSTRACT
In this paper we discuss a priori error estimates and superconvergence of splitting positive definite mixed finite element methods for optimal control problems governed by pseudo-hyperbolic integro-differential equations. The state variables and co-state variables are approximated by the lowest order Raviart–Thomas mixed finite element functions, and the control variable is approximated by piecewise constant functions. First, we derive a priori error estimates for the control variable, state variables, and co-state variables. Second, we obtain a superconvergence result for the control variable.
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This work was supported by the NNSF of China (grant no. 11601014) and by Beihua University Youth Research and Innovation Team Development Project.
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Xu, C. A Priori Error Estimates and Superconvergence of Splitting Positive Definite Mixed Finite Element Methods for Pseudo-Hyperbolic Integro-Differential Optimal Control Problems. Numer. Analys. Appl. 13, 17–33 (2020). https://doi.org/10.1134/S1995423920010024
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DOI: https://doi.org/10.1134/S1995423920010024