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» Online coloring of hypergraphs
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77
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FSTTCS
2010
Springer
14 years 8 months ago
Colored Hypergraph Isomorphism is Fixed Parameter Tractable
We describe a fixed parameter tractable (fpt) algorithm for Colored Hypergraph Isomorphism which has running time 2O(b) NO(1) , where the parameter b is the maximum size of the col...
Vikraman Arvind, Bireswar Das, Johannes Köble...
CORR
2010
Springer
74views Education» more  CORR 2010»
14 years 10 months ago
Conflict-Free Coloring and its Applications
Let H = (V, E) be a hypergraph. A conflict-free coloring of H is an assignment of colors to V such that in each hyperedge e E there is at least one uniquely-colored vertex. This ...
Shakhar Smorodinsky
123
Voted
COMBINATORICS
2002
93views more  COMBINATORICS 2002»
14 years 10 months ago
On a Theorem of Erdos, Rubin, and Taylor on Choosability of Complete Bipartite Graphs
Erdos, Rubin, and Taylor found a nice correspondence between the minimum order of a complete bipartite graph that is not r-choosable and the minimum number of edges in an r-unifor...
Alexandr V. Kostochka
52
Voted
DAM
2008
59views more  DAM 2008»
14 years 10 months ago
Vertex coloring acyclic digraphs and their corresponding hypergraphs
We consider vertex coloring of an acyclic digraph G in such a way that two vertices which have a common ancestor in G receive distinct colors. Such colorings arise in a natural wa...
Geir Agnarsson, Ágúst S. Egilsson, M...
FOCS
2000
IEEE
15 years 2 months ago
Hardness of Approximate Hypergraph Coloring
Venkatesan Guruswami, Johan Håstad, Madhu Su...