报告人： 潘建瑜教授（华东师范大学99905银河在线登录平台）

报告时间： 2021年11月10（周三）下午 4：00---5：00. 

报告地点：数学楼二楼报告厅

摘要：Fractional diffusion equations have been shown to provide an adequate and accurate description of transport processes that exhibit anomalous diffusion, which cannot be modeled properly by traditional second-order diffusion equations. Extensive research has been conducted in the development of numerical methods for fractional differential equations. It was not realized until recently that solutions to fractional differential equations may exhibit boundary layer and poor regularity even if the diffusivity coefficient and right-hand side are smooth. A fundamental approach is to employ a locally refined composite mesh, which leads to a system of linear equations with block dense coefficient matrix. In this talk, we will discuss the block-type preconditioners for such dense linear system.

邀请人：曹永罗