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学术活动
Convergence analysis of one-point large deviations rate functions of numerical methods for stochastic wave equations with small noise
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报告人:
Diancong Jin, Lecturer, School of Mathematics and Statistics, Huazhong University of Science and Technology
邀请人:
Xu Wang, Associate Professor
题目:
Convergence analysis of one-point large deviations rate functions of numerical methods for stochastic wave equations with small noise
时间地点:
19:00-20:00 February 23 (Thursday), Tencent Meeting ID: 179-900-698
摘要:

In this talk, we present the pointwise convergence of one-point large deviations rate functions (LDRFs) of the spatial finite difference method and further the fully discrete method based on the temporal accelerated exponential Euler method for stochastic wave equations with small noise. This kind of convergence analysis is essentially about the asymptotical limit of minimization problems. In order to overcome the difficulty that objective functions associated with the original equation and these numerical methods have different effective domains, we propose a new technical route for analyzing the pointwise convergence of the one-point LDRFs of the numerical methods, building on theΓ-convergence of objective functions. Based on the new technical route, the intractable convergence analysis of one-point LDRFs boils down to the qualitative analysis of skeleton equations of the original equation and its numerical methods.