clearly outlining the
main principles and practical utility of multigrid methods. Brandt's work
drew attention and marked the beginning of rapid development. During
1975 and 1976, Hackbusch developed the fundamental elements of
multigrid methods, Hackbusch's first systematic report in 1976 contained
many theoretical and practical investigations, which were taken up and
8
developed further by several authors. Since the early 1980s, the field of
multigrid extended and many researchers have contributed to this field.
Two series of conferences dedicated to multigrid methods were set up