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DCG
2000
94views more  DCG 2000»
13 years 5 months ago
Finding Small Triangulations of Polytope Boundaries Is Hard
We prove that it is NP-hard to decide whether a polyhedral 3-ball can be triangulated with k simplices. The construction also implies that it is difficult to find the minimal trian...
Jürgen Richter-Gebert
AAAI
1994
13 years 6 months ago
Small is Beautiful: A Brute-Force Approach to Learning First-Order Formulas
We describe a method for learning formulas in firstorder logic using a brute-force, smallest-first search. The method is exceedingly simple. It generates all irreducible well-form...
Steven Minton, Ian Underwood
ACS
2004
13 years 5 months ago
Residually Small Varieties Without Rank
Subdirect representations are investigated in varieties which are defined by operations of not necessarily finite arity. It is shown that, in this context, Birkhoff's Subdire...
Hans-E. Porst
IJFCS
2002
122views more  IJFCS 2002»
13 years 5 months ago
The Delaunay Hierarchy
We propose a new data structure to compute the Delaunay triangulation of a set of points in the plane. It combines good worst case complexity, fast behavior on real data, small me...
Olivier Devillers
DCG
2010
69views more  DCG 2010»
13 years 5 months ago
Irreducible Apollonian Configurations and Packings
An Apollonian configuration of circles is a collection of circles in the plane with disjoint interiors such that the complement of the interiors of the circles consists of curvili...
Steve Butler, Ronald L. Graham, Gerhard Guettler, ...