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» Improper choosability of graphs and maximum average degree
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SODA
2000
ACM
121views Algorithms» more  SODA 2000»
13 years 6 months ago
Coloring powers of planar graphs
We give nontrivial bounds for the inductiveness or degeneracy of power graphs Gk of a planar graph G. This implies bounds for the chromatic number as well, since the inductiveness ...
Geir Agnarsson, Magnús M. Halldórsso...
DM
2008
103views more  DM 2008»
13 years 5 months ago
Improper colouring of (random) unit disk graphs
For any graph G, the k-improper chromatic number k (G) is the smallest number of colours used in a colouring of G such that each colour class induces a subgraph of maximum degree ...
Ross J. Kang, Tobias Müller, Jean-Séba...
COMBINATORICS
2006
121views more  COMBINATORICS 2006»
13 years 5 months ago
Edge and Total Choosability of Near-Outerplanar Graphs
It is proved that, if G is a K4-minor-free graph with maximum degree 4, then G is totally ( + 1)-choosable; that is, if every element (vertex or edge) of G is assigned a list of ...
Timothy J. Hetherington, Douglas R. Woodall
SPAA
2009
ACM
14 years 5 months ago
Brief announcement: parameterized maximum and average degree approximation in topic-based publish-subscribe overlay network desi
Designing an overlay network for publish/subscribe communication in a system where nodes may subscribe to many different topics of interest is of fundamental importance. For scala...
Melih Onus, Andréa W. Richa
CORR
2010
Springer
93views Education» more  CORR 2010»
13 years 5 months ago
Injective colorings of graphs with low average degree
Let mad(G) denote the maximum average degree (over all subgraphs) of G and let i(G) denote the injective chromatic number of G. We prove that if 4 and mad(G) < 14 5 , then i(G...
Daniel W. Cranston, Seog-Jin Kim, Gexin Yu