抄録
The linear potential problem not only arises as it is but also appears as a part of nonlinear problem solvers. Hence a rapid solver for the potential problem is of considerable value. Although so many good computer programs are available now, it is worthwhile using programs according as their specific aims rather than solving both complicated problems and simple problems like the potential ones in a single computer code. In this paper we attempt to survey recent results on some algorithms which work only for the Laplace operator but is rapid.
