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EJC
2011
12 years 11 months ago
Cubic time recognition of cocircuit graphs of uniform oriented matroids
We present an algorithm which takes a graph as input and decides in cubic time if the graph is the cocircuit graph of a uniform oriented matroid. In the affirmative case the algor...
Stefan Felsner, Ricardo Gómez Aiza, Kolja B...
DCG
2002
66views more  DCG 2002»
13 years 4 months ago
Generation of Oriented Matroids - A Graph Theoretical Approach
We discuss methods for the generation of oriented matroids and of isomorphism classes of oriented matroids. Our methods are based on single element extensions and graph theoretica...
Lukas Finschi, Komei Fukuda
CCCG
2001
13 years 5 months ago
Complete combinatorial generation of small point configurations and hyperplane arrangements
A recent progress on the complete enumeration of oriented matroids enables us to generate all combinatorial types of small point configurations and hyperplane arrangements in gene...
Lukas Finschi, Komei Fukuda
COSIT
2003
Springer
133views GIS» more  COSIT 2003»
13 years 9 months ago
Convexity in Discrete Space
This paper looks at axioms for convexity, and shows how they can be applied to discrete spaces. Two structures for a discrete geometry are considered: oriented matroids, and cell c...
Anthony J. Roy, John G. Stell
ICRA
2005
IEEE
111views Robotics» more  ICRA 2005»
13 years 10 months ago
A New Formalism to Characterize Contact States Involving Articulated Polyhedral Objects
— In this paper a novel formalism to characterize contact states between an articulated polyhedral object and a polyhedral environment for the generation of the graph of feasible...
Ernesto Staffetti, Wim Meeussen, Jing Xiao