Abstract. Given a set P of points and a set S of pairwise disjoint axis-parallel line segments in the plane, we construct a straight line spanning tree T on P such that every segme...
Abstract: The nonlinear conjugate gradient method is widely used in unconstrained optimization. However, the line search is very difficult or expensive sometimes. In this paper, we...
A linkage is a collection of line segments, called bars, possibly joined at their ends, called joints. Straightening a tree linkage is a continuous motion of their bars from an ini...