发布时间:2020-10-16
报告人 :汪志波 (广东工业大学 教授)
报告人简介 :
汪志波,博士,广东省珠江人才计划-引进高层次人才,《Mathematical Problems in Engineering》编委。主要从事偏微分方程数值解法等方面的研究。2016年以“青年百人A类”人才计划加入广东工业大学,主持国家自然科学基金2项、广东省自然科学基金2项等8项科研项目,在《J. Comput. Phys.》、《J. Sci. Comput.》、《Appl. Math. Comput.》、《Appl. Math. Lett.》、等期刊发表SCI论文近30篇,其中高被引论文1篇,H指数11,i10指数12。
报告题目:Compact difference schemes for time-fractional integro-differential equations with singular kernels
报告摘要:A high-order compact alternating direction implicit scheme is considered to solve the time-fractional integro-differential equation with weak singularity near the initial time in this paper. The L1 formula and trapezoidal PI rule on nonuniform meshes, which greatly improve the temporal accuracy compared to the method on uniform grids, are adopted to approximate the Caputo derivative and the Riemann-Liouville integral, respectively. With the help of a modified discrete fractional Grönwall inequality and some crucial skills, the stability and convergence of the proposed scheme are analyzed. Numerical results confirm the sharpness of the error analysis.
报告时间 :2020年10月19日下午18:45-20:45
报告地点 :腾讯会议室:795953726