Sciweavers

CCCG
2010
13 years 11 months ago
Triangulations with many points of even degree
Let S be a set of points in the plane in general position. A triangulation of S will be called even if all the points of S have an even degree. We show how to construct a triangul...
Jorge Urrutia, Canek Peláez, Adriana Ram&ia...
CCCG
2010
13 years 11 months ago
Approximate shortest path algorithms for sequences of pairwise disjoint simple polygons
Assume that two points p and q are given and a finite ordered set of simple polygons, all in the same plane; the basic version of a touring-a-sequence-of-polygons problem (TPP) is...
Xiuxia Pan, Fajie Li, Reinhard Klette
CCCG
2010
13 years 11 months ago
Stable roommates and geometric spanners
In this paper we devise a new geometric spanner based on a generalization of the known Stable Roommates algorithm. This spanner is on the "path" between the Yao graph an...
Paz Carmi, Lilach Chaitman
CCCG
2010
13 years 11 months ago
Complete enumeration of small realizable oriented matroids
Hiroyuki Miyata, Sonoko Moriyama, Komei Fukuda
CCCG
2010
13 years 11 months ago
Blocking delaunay triangulations
Given a set B of n blue points in general position, we say that a set of red points R blocks B if in the Delaunay triangulation of B R there is no edge connecting two blue points...
Oswin Aichholzer, Ruy Fabila Monroy, Thomas Hackl,...
CCCG
2010
13 years 11 months ago
k-sets and continuous motion in R3
We prove several new results concerning k-sets of point sets on the 2-sphere (equivalently, for signed point sets in the plane) and k-sets in 3-space. Specific results include sph...
Marek Sulovský, Uli Wagner
CCCG
2010
13 years 11 months ago
On the variance of random polygons
A random polygon is the convex hull of uniformly distributed random points in a convex body K R2 . General upper bounds are established for the variance of the area of a random p...
William L. Steiger, Imre Bárány
CCCG
2010
13 years 11 months ago
Those ubiquitous cut polyhedra
I first met Paul Erd
David Avis
CCCG
2010
13 years 11 months ago
Constrained k-center and movement to independence
We obtain hardness results and approximation algorithms for two related geometric problems involving movement. The first is a constrained variant of the k-center problem, arising ...
Adrian Dumitrescu, Minghui Jiang
CCCG
2010
13 years 11 months ago
Computing straight skeletons of planar straight-line graphs based on motorcycle graphs
We present a simple algorithm for computing straight skeletons of planar straight-line graphs. We exploit the relation between motorcycle graphs and straight skeletons, and introd...
Stefan Huber, Martin Held