William L. Briggs developed teaching material on multigrid. The tutorial viewpoint explains why a coarse representation can correct smooth error left behind by a fine-grid relaxation method.[ref]
A Multigrid Tutorial (lecture slides) by William L. Briggs. author attribution and the described mathematical development
Portrait of William L. Briggs
. External portrait hosted by University of Colorado Boulder, Center for Leadership. Source. New to topics? Read the docs here!