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EJC
2010
14 years 16 days ago
Some graphs related to the small Mathieu groups
Two different constructions are given of a rank 8 arc-transitive graph with 165 vertices and valency 8, whose automorphism group
Alice Devillers, Michael Giudici, Cai Heng Li, Che...
EJC
2010
14 years 16 days ago
An extension of the bivariate chromatic polynomial
Ilya Averbouch, Benny Godlin, Johann A. Makowsky
EJC
2010
14 years 16 days ago
A linear equation for Minkowski sums of polytopes relatively in general position
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...
Komei Fukuda, Christophe Weibel
EJC
2010
14 years 16 days ago
A note on antisymmetric flows in graphs
We prove that any orientation of a graph without bridges and directed 2-edge-cuts admits a Z3 2
Zdenek Dvorak, Tomás Kaiser, Daniel Kr&aacu...
EJC
2010
14 years 16 days ago
Bijections for a class of labeled plane trees
We consider plane trees whose vertices are given labels from the set {1, 2, . . . , k} in such a way that the sum of the labels along any edge is at most k + 1; it turns out that ...
Nancy S. S. Gu, Helmut Prodinger, Stephan Wagner