EJC
2010
13 years 6 months ago
2010
EJC
2010
13 years 6 months ago
2010
EJC
2010
13 years 6 months 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"...
EJC
2010
13 years 6 months 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 ...
EJC
2010
13 years 6 months 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
13 years 6 months ago
2010
Two different constructions are given of a rank 8 arc-transitive graph with 165 vertices and valency 8, whose automorphism group
EJC
2010
13 years 6 months ago
2010
EJC
2010
13 years 6 months 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...
EJC
2010
13 years 6 months ago
2010
EJC
2010
13 years 6 months ago
2010
We prove that any orientation of a graph without bridges and directed 2-edge-cuts admits a Z3 2