Publication date
August 1990
DOI Publisher
Published by Elsevier Inc. ISSN
0095-8956Abstract
AbstractThe number of acyclic reorientations of a weakly oriented matroid M is ≤t(M; 2,0). Equality holds if and only if M is an oriented matroid
AbstractThe number of acyclic reorientations of a weakly oriented matroid M is ≤t(M; 2,0). Equality holds if and only if M is an oriented matroid
This paper studies systems of polynomial equations that provide information about orientabi...
AbstractMatroid coordinatizations over GF(3) are characterized by several properties, including a si...
AbstractThis paper gives new characterizations of weak maps of oriented matroids: as maps of covecto...
AbstractThe number of acyclic reorientations of a weakly oriented matroid M is ≤t(M; 2,0). Equality ...
We show that the orientation class of an oriented matroid of corank ⩾ 3 is completely determined by ...
We consider the problem of reorienting an oriented matroid so that all its cocircuits are ‘as balanc...
AbstractIn this paper we define oriented matroids and develop their fundamental properties, which le...
AbstractWe generalize to oriented matroids classical notions of Convexity Theory: faces of convex po...
AbstractA comparison of two expressions of the Tutte polynomial of an ordered oriented matroid, one ...
We give a version for oriented matroids of the following problem of McMullen: ‘Determine the largest...
Matroids with coefficients, recently introduced by Dress [4], generalize ordinary matroids, Tutte re...
AbstractTwo elements of an oriented matroid constitute an invariant pair if all signed circuits cont...
© 2015 Elsevier Ltd. This paper studies systems of polynomial equations that provide information abo...
This paper studies systems of polynomial equations that provide information about orientability of m...
AbstractIn this paper, the basic properties of oriented matroids are examined. A topological represe...
This paper studies systems of polynomial equations that provide information about orientabi...
AbstractMatroid coordinatizations over GF(3) are characterized by several properties, including a si...
AbstractThis paper gives new characterizations of weak maps of oriented matroids: as maps of covecto...
AbstractThe number of acyclic reorientations of a weakly oriented matroid M is ≤t(M; 2,0). Equality ...
We show that the orientation class of an oriented matroid of corank ⩾ 3 is completely determined by ...
We consider the problem of reorienting an oriented matroid so that all its cocircuits are ‘as balanc...
AbstractIn this paper we define oriented matroids and develop their fundamental properties, which le...
AbstractWe generalize to oriented matroids classical notions of Convexity Theory: faces of convex po...
AbstractA comparison of two expressions of the Tutte polynomial of an ordered oriented matroid, one ...
We give a version for oriented matroids of the following problem of McMullen: ‘Determine the largest...
Matroids with coefficients, recently introduced by Dress [4], generalize ordinary matroids, Tutte re...
AbstractTwo elements of an oriented matroid constitute an invariant pair if all signed circuits cont...
© 2015 Elsevier Ltd. This paper studies systems of polynomial equations that provide information abo...
This paper studies systems of polynomial equations that provide information about orientability of m...
AbstractIn this paper, the basic properties of oriented matroids are examined. A topological represe...
This paper studies systems of polynomial equations that provide information about orientabi...
AbstractMatroid coordinatizations over GF(3) are characterized by several properties, including a si...
AbstractThis paper gives new characterizations of weak maps of oriented matroids: as maps of covecto...
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