4 papers · 1 filter
Preprocessing Chains for Fast Dihedral Rotations Is Hard or Even Impossible
Michael Soss, Jeff Erickson, Mark Overmars
We examine a computational geometric problem concerning the structure of polymers. We model a polymer as a polygonal chain in three dimensions. Each edge splits the polymer into tw…
Flipturning polygons
Oswin Aichholzer, Carmen Cortes, Erik D. Demaine +7
A flipturn is an operation that transforms a nonconvex simple polygon into another simple polygon, by rotating a concavity 180 degrees around the midpoint of its bounding convex hu…
Locked and Unlocked Polygonal Chains in 3D
T. Biedl, E. Demaine, M. Demaine +8
In this paper, we study movements of simple polygonal chains in 3D. We say that an open, simple polygonal chain can be straightened if it can be continuously reconfigured to a stra…
Locked and Unlocked Polygonal Chains in 3D
T. Biedl, E. Demaine, M. Demaine +8
In this paper, we study movements of simple polygonal chains in 3D. We say that an open, simple polygonal chain can be straightened if it can be continuously reconfigured to a stra…