Hu Ding

The Stretch Factor of Planar Delaunay Triangulations Is Less Than 1.5949

Delaunay triangulations are the classical plane spanners: the shortest path between two vertices is at most a constant times as long as the segment between them. Determining the smallest such constant, the worst-case stretch factor of Delaunay triangulations, is a long-standing open problem; the best known lower and up...