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» On the Generation of Oriented Matroids
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JCT
2008
37views more  JCT 2008»
13 years 7 months ago
Generating weakly 4-connected matroids
Jim Geelen, Xiangqian Zhou
ESA
2006
Springer
112views Algorithms» more  ESA 2006»
13 years 11 months ago
Enumerating Spanning and Connected Subsets in Graphs and Matroids
We show that enumerating all minimal spanning and connected subsets of a given matroid is quasi-polynomially equivalent to the well-known hypergraph transversal problem, and thus ...
Leonid Khachiyan, Endre Boros, Konrad Borys, Khale...
ICCV
2003
IEEE
14 years 23 days ago
Combinatorial Constraints on Multiple Projections of a Set of Points
Multiple projections of a scene cannot be arbitrary, the allowed configurations being given by matching constraints. This paper presents new matching constraints on multiple proj...
Tomás Werner
COMBINATORICS
2002
89views more  COMBINATORICS 2002»
13 years 7 months ago
Generating a Random Sink-free Orientation in Quadratic Time
A sink-free orientation of a finite undirected graph is a choice of orientation
Henry Cohn, Robin Pemantle, James Gary Propp
ORDER
2011
13 years 2 months ago
Order Types of Convex Bodies
We prove a Hadwiger transversal type result, characterizing convex position on a family of non-crossing convex bodies in the plane. This theorem suggests a definition for the ord...
Alfredo Hubard, Luis Montejano, Emiliano Mora, And...