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» On Perfect Switching Classes
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FSTTCS
2010
Springer
13 years 5 months ago
Finding Independent Sets in Unions of Perfect Graphs
ABSTRACT. The maximum independent set problem (MAXIS) on general graphs is known to be NPhard to approximate within a factor of n1-, for any > 0. However, there are many "...
Venkatesan T. Chakaravarthy, Vinayaka Pandit, Samb...
SIAMDM
2008
143views more  SIAMDM 2008»
13 years 7 months ago
Coloring Bull-Free Perfectly Contractile Graphs
We consider the class of graphs that contain no bull, no odd hole, and no antihole of length at least five. We present a new algorithm that colors optimally the vertices of every g...
Benjamin Lévêque, Frédé...
WABI
2005
Springer
132views Bioinformatics» more  WABI 2005»
14 years 28 days ago
Perfect Sorting by Reversals Is Not Always Difficult
—We propose new algorithms for computing pairwise rearrangement scenarios that conserve the combinatorial structure of genomes. More precisely, we investigate the problem of sort...
Sèverine Bérard, Anne Bergeron, Cedr...
JGT
2006
97views more  JGT 2006»
13 years 7 months ago
Matchings in hypergraphs of large minimum degree
It is well known that every bipartite graph with vertex classes of size n whose minimum degree is at least n/2 contains a perfect matching. We prove an analogue of this result for...
Daniela Kühn, Deryk Osthus
EDCC
2010
Springer
14 years 8 days ago
Early Consensus in Message-Passing Systems Enriched with a Perfect Failure Detector and Its Application in the Theta Model
: While lots of consensus algorithms have been proposed for crash-prone asynchronous message-passing systems enriched with a failure detector of the class Ω (the class of eventua...
François Bonnet, Michel Raynal