A Multigrid Algorithm for Elliptic Problems

                                 Loyce Adams 


A second order accurate strategy, called the Immersed Interface Method was
proposed by Randall LeVeque and Zhilin Li for solving elliptic problems that
have possible jumps in the forcing function, the solution, the flux, or the
coefficients across some internal interface that is not necessarily aligned
with the computational grid.  In this paper, we describe a FMG (full
multigrid) strategy that works well with the immersed interface approach.
Results for a variety of model problems are given.