The paper is a continuation of an earlier paper (Sarna, 1989). Complem
entary fast computation formulas for operation sup(xy)min[h(x),z(y), p
hi(x,y)] are proved to complete the combination of every pair of ''tri
angular'', ''rectangular'', ''trapezial'' and ''crisp'' numbers. A com
puter program for complete combination of four fuzzy numbers is annexe
d. (C) 1998 Elsevier Science B.V.