Background Developed over the last 25 years- Brandt (1973) published first paper with practical results Offers the possibility of solving a problem with work and storage proportional to the number of unknowns Well developed for linear elliptic problems application to other equations is still an active area of research Good Introductory Reference: A Multigrid Tutorial, W.L. Briggs, V.E.Henson, and S F. McCormick, SIAM Monograph, 2000 SMA-HPC⊙2003MT Iterative Methods: Multigrid Techniques 1