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ARSCOM
2007
91views more  ARSCOM 2007»
14 years 9 months ago
Zero-Sum Magic Graphs And Their Null Sets
For any h ∈ N, a graph G = (V, E) is said to be h-magic if there exists a labeling l : E(G) → Zh − {0} such that the induced vertex labeling l+ : V (G) → Zh defined by l+ ...
Ebrahim Salehi
91
Voted
JGT
2011
109views more  JGT 2011»
14 years 4 months ago
Total weight choosability of graphs
A graph G = (V, E) is called (k, k )-total weight choosable if the following holds: For any total list assignment L which assigns to each vertex x a set L(x) of k real numbers, an...
Tsai-Lien Wong, Xuding Zhu
89
Voted
CCCG
2010
14 years 11 months ago
Some properties of higher order delaunay and gabriel graphs
We consider two classes of higher order proximity graphs defined on a set of points in the plane, namely, the k-Delaunay graph and the k-Gabriel graph. We give bounds on the follo...
Prosenjit Bose, Sébastien Collette, Ferran ...
STOC
2005
ACM
135views Algorithms» more  STOC 2005»
15 years 9 months ago
Quadratic forms on graphs
We introduce a new graph parameter, called the Grothendieck constant of a graph G = (V, E), which is defined as the least constant K such that for every A : E R, sup f:V S|V |-1 ...
Noga Alon, Konstantin Makarychev, Yury Makarychev,...
WOB
2008
128views Bioinformatics» more  WOB 2008»
14 years 11 months ago
Tests for Gene Clusters Satisfying the Generalized Adjacency Criterion
Abstract. We study a parametrized definition of gene clusters that permits control over the trade-off between increasing gene content versus conserving gene order within a cluster....
Ximing Xu, David Sankoff