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» On the Generation of Oriented Matroids
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EJC
2000
13 years 7 months ago
Cyclic Polytopes and Oriented Matroids
Consider the moment curve in the real Euclidean space Rd defined parametrically by the map : R Rd , t (t) = (t, t2 , . . . , td ). The cyclic d-polytope Cd(t1, . . . , tn) is t...
Raul Cordovil, Pierre Duchet
CORR
2010
Springer
74views Education» more  CORR 2010»
13 years 7 months ago
Scalar-linear Solvability of Matroidal Networks Associated with Representable Matroids
We study matroidal networks introduced by Dougherty et al., who showed that if a network is scalar-linearly solvable over some finite field, then the network is a matroidal network...
Anthony Kim, Muriel Médard
EJC
2011
13 years 2 months ago
Modular elimination in matroids and oriented matroids
Abstract. We introduce a new axiomatization of oriented matroids that requires the elimination property only among modular pairs of circuits. This new point of view leads also to a...
Emanuele Delucchi
COMBINATORICS
2004
93views more  COMBINATORICS 2004»
13 years 7 months ago
On the Combinatorial Structure of Arrangements of Oriented Pseudocircles
We introduce intersection schemes (a generalization of uniform oriented matroids of rank 3) to describe the combinatorial properties of arrangements of pseudocircles in the plane ...
Johann Linhart, Ronald Ortner
ENTCS
2002
93views more  ENTCS 2002»
13 years 7 months ago
Matroids from modules
The aim of this work is to show that (oriented) matroid methods can be applied to many discrete geometries, namely those based on modules over integral (ordered) domains. The tric...
Nils Anders Danielsson, Michael B. Smyth