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CCCG
2003
13 years 6 months ago
Parallel morphing of trees and cycles
We prove that for any two simple chains [more generally, trees] in Rd with corresponding edges parallel, there is a parallel morph between them—i.e. a morph in which all interme...
Therese C. Biedl, Anna Lubiw, Michael J. Spriggs
CCCG
2003
13 years 6 months ago
On the worst-case complexity of the silhouette of a polytope
We give conditions under which the worst-case size of the silhouette of a polytope is sub-linear.
Helmut Alt, Marc Glisse, Xavier Goaoc
CCCG
2003
13 years 6 months ago
On the Number of Pseudo-Triangulations of Certain Point Sets
We pose a monotonicity conjecture on the number of pseudo-triangulations of any planar point set, and check it on two prominent families of point sets, namely the so-called double...
Oswin Aichholzer, David Orden, Francisco Santos, B...
CCCG
2003
13 years 6 months ago
Degree Bounds for Constrained Pseudo-Triangulations
We introduce the concept of a constrained pointed pseudo-triangulation TG of a point set S with respect to a pointed planar straight line graph G = (S, E). For the case that G for...
Oswin Aichholzer, Michael Hoffmann, Bettina Speckm...
CCCG
2003
13 years 6 months ago
Multidimensional Orthogonal Range Search Using Tries
We present a novel k-dimensional range search algorithm for reporting all k-d rectangles from a set D of size n intersecting a query rectangle. Our algorithm uses 2kd tries to sol...
Lingke Bu, Bradford G. Nickerson
CCCG
2001
13 years 6 months ago
Geometric permutations of balls with bounded size disparity
We study combinatorial bounds for geometric permutations of balls with bounded size disparity in d-space. Our main contribution is the following theorem: given a set S of n disjoi...
Yunhong Zhou, Subhash Suri
CCCG
2001
13 years 6 months ago
Tutte's barycenter method applied to isotopies
This paper is concerned with applications of Tutte's barycentric embedding theorem (Proc. London Math. Soc. 13 (1963), 743
Éric Colin de Verdière, Michel Pocch...
CCCG
2001
13 years 6 months ago
Nearest neighbor search through function minimization
This paper describes a solution to the nearest neighbor problem. The proposed algorithm, which makes use of the triangle inequality property, is considered from a function minimiz...
Chang Shu, Michael A. Greenspan, Guy Godin
CCCG
2001
13 years 6 months ago
Counting triangulations and pseudo-triangulations of wheels
Dana Randall, Günter Rote, Francisco Santos, ...
CCCG
2001
13 years 6 months ago
Tight degree bounds for pseudo-triangulations of points
We show that every set of n points in general position has a minimum pseudo-triangulation whose maximum vertex degree is five. In addition, we demonstrate that every point set in ...
Lutz Kettner, David G. Kirkpatrick, Bettina Speckm...