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We introduce a variation of the scheduling with precedence constraints problem that has applications to molecular folding and production management. We are given a bipartite graph H = (B, S). Vertices in B are thought of as goods or services that must be bought to produce items in S that are to be sold. An edge from j ∈ S to i ∈ B indicates that the… (More)

We consider a special case of the generalized minimum spanning tree problem (GMST) and the generalized travelling salesman problem (GTSP) where we are given a set of points inside the integer grid (in Euclidean plane) where each gride cell is 1 × 1. In the MST version of the problem, the goal is to find a minimum tree that contains exactly one point from… (More)

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