Abstract
The main aim of this paper is to investigate the strong convergence order for the truncated Euler-Maruyama (TEM) method to solve stochastic differential delay equations (SDDEs) with multiple time delays and super-linearly growing coefficients. The strong Lp (1 ≤ p < 2) convergence rate of the TEM method under the one-sided polynomial growth condition is first established. Imposing additional conditions on the diffusion coefficient, the p-th moment uniform boundedness of both the exact and approximate solutions is then proved. Next, we show that the strong order of Lq-convergence can be arbitrarily close to 1/2 for 2 ≤ q ≤ p. Several examples and a numerical simulation are provided to illustrate the main results at the end.
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Funding
This research was supported in part by the National Natural Science Foundation of China (Grant No. 12171173; 11701161) and by grants from the National Key Research and Development Project of China (Grant No. 2020YFC2006205).
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Zhou, S., Jin, H. The truncated Euler-Maruyama method for highly nonlinear stochastic differential equations with multiple time delays. Numer Algor 94, 581–617 (2023). https://doi.org/10.1007/s11075-023-01512-1
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DOI: https://doi.org/10.1007/s11075-023-01512-1
Keywords
- Truncated Euler-Maruyama method
- Multiple time delays
- Strong convergence order
- Moment boundedness
- Polynomial growth condition