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» Coloring H-free hypergraphs
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COMBINATORICS
2002
93views more  COMBINATORICS 2002»
15 years 5 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
110
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DAM
2008
59views more  DAM 2008»
15 years 5 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...
ICALP
2007
Springer
15 years 9 months ago
Online Conflict-Free Colorings for Hypergraphs
We provide a framework for online conflict-free coloring (CF-coloring) of any hypergraph. We use this framework to obtain an efficient randomized online algorithm for CF-coloring ...
Amotz Bar-Noy, Panagiotis Cheilaris, Svetlana Olon...
FOCS
2000
IEEE
15 years 10 months ago
Hardness of Approximate Hypergraph Coloring
Venkatesan Guruswami, Johan Håstad, Madhu Su...
FOCS
1998
IEEE
15 years 10 months ago
Improved Bounds and Algorithms for Hypergraph Two-Coloring
Jaikumar Radhakrishnan, Aravind Srinivasan