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» A General Polynomial Sieve
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DAM
2008
109views more  DAM 2008»
13 years 9 months ago
Minimal comparability completions of arbitrary graphs
A transitive orientation of an undirected graph is an assignment of directions to its edges so that these directed edges represent a transitive relation between the vertices of th...
Pinar Heggernes, Federico Mancini, Charis Papadopo...
CORR
2006
Springer
91views Education» more  CORR 2006»
13 years 9 months ago
The Complexity of Mean Flow Time Scheduling Problems with Release Times
We study the problem of preemptive scheduling n jobs with given release times on m identical parallel machines. The objective is to minimize the average flow time. We show that wh...
Philippe Baptiste, Peter Brucker, Marek Chrobak, C...
DAM
2006
81views more  DAM 2006»
13 years 9 months ago
The satisfactory partition problem
The Satisfactory Partition problem consists in deciding if a given graph has a partition of its vertex set into two nonempty parts such that each vertex has at least as many neigh...
Cristina Bazgan, Zsolt Tuza, Daniel Vanderpooten
DAM
2006
191views more  DAM 2006»
13 years 9 months ago
Approximating the minimum clique cover and other hard problems in subtree filament graphs
Subtree filament graphs are the intersection graphs of subtree filaments in a tree. This class of graphs contains subtree overlap graphs, interval filament graphs, chordal graphs,...
J. Mark Keil, Lorna Stewart
CORR
2007
Springer
80views Education» more  CORR 2007»
13 years 9 months ago
Polygraphs for termination of left-linear term rewriting systems
– We present a methodology for proving termination of left-linear term rewriting systems (TRSs) by using Albert Burroni’s polygraphs, a kind of rewriting systems on algebraic c...
Yves Guiraud