EJC
2010
15 years 15 days ago
2010
67
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EJC
2010
15 years 15 days ago
2010
EJC
2010
15 years 15 days ago
2010
This article presents new bijections on planar maps. At first a bijection is established between bipolar orientations on planar maps and specific "transversal structures"...
107
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EJC
2010
15 years 15 days ago
2010
Let G be a simple connected graph with n vertices and n edges which we call an unicyclic graph. In this paper, we first investigate the least eigenvalue n(G), then we present two ...
84
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EJC
2010
15 years 15 days ago
2010
We introduce the idea of Assur graphs, a concept originally developed and exclusively employed in the literature of the kinematics community. The paper translates the terminology,...
EJC
2010
15 years 15 days ago
2010
Two different constructions are given of a rank 8 arc-transitive graph with 165 vertices and valency 8, whose automorphism group
60
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EJC
2010
15 years 15 days ago
2010
89
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EJC
2010
15 years 15 days ago
2010
The objective of this paper is to study a special family of Minkowski sums, that is of polytopes relatively in general position. We show that the maximum number of faces in the su...
71
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EJC
2010
15 years 15 days ago
2010
We prove that any orientation of a graph without bridges and directed 2-edge-cuts admits a Z3 2