2024年09月20日 星期五 登录 EN

学术活动
Multi-domain fractional collocation methods for Volterra integro-differential equations with weakly singular kernels
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报告人:
Huang Chengming, Professor, Huazhong University of Science and Technology
邀请人:
Hong Jialin, Professor
题目:
Multi-domain fractional collocation methods for Volterra integro-differential equations with weakly singular kernels
时间地点:
19:00-21:00 July 26(Tuesday), Tencent Meeting ID: 660-848-563
摘要:

In this talk, we propose an hp-version fractional collocation method for solving second kind Volterra integro-differential equations with weakly singular kernels. We derive hp-version error estimates in a weighted H1-norm for the method on arbitrary meshes. The results show that for any given mesh partition, exponential rates of convergence can be achieved for certain weakly singular solutions by linearly increasing the degrees of piecewise fractional polynomials. The results also imply that in the case of uniform mesh, the method has no (h-version) order barrier for weakly singular solutions, which is different from classical polynomial collocation methods. The method is easy to implement and has the same computational complexity as polynomial collocation methods. Numerical experiments are presented to demonstrate the efficiency of the proposed method.