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» On the combinatorics of Galois numbers
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COCOON
2005
Springer
15 years 5 months ago
Power Domination Problem in Graphs
To monitor an electric power system by placing as few phase measurement units (PMUs) as possible is closely related to the famous vertex cover problem and domination problem in gr...
Chung-Shou Liao, Der-Tsai Lee
COCOON
2005
Springer
15 years 5 months ago
On the Approximation of Computing Evolutionary Trees
Given a set of leaf-labelled trees with identical leaf sets, the well-known MAST problem consists of finding a subtree homeomorphically included in all input trees and with the la...
Vincent Berry, Sylvain Guillemot, François ...
COCOON
2005
Springer
15 years 5 months ago
Exploring Simple Grid Polygons
Abstract. We investigate the online exploration problem of a shortsighted mobile robot moving in an unknown cellular room without obstacles. The robot has a very limited sensor; it...
Christian Icking, Thomas Kamphans, Rolf Klein, Elm...
COCOON
2003
Springer
15 years 5 months ago
Tetris is Hard, Even to Approximate
In the popular computer game of Tetris, the player is given a sequence of tetromino pieces and must pack them into a rectangular gameboard initially occupied by a given configurat...
Erik D. Demaine, Susan Hohenberger, David Liben-No...
98
Voted
DAM
2008
87views more  DAM 2008»
14 years 11 months ago
Partial characterizations of clique-perfect graphs I: Subclasses of claw-free graphs
A clique-transversal of a graph G is a subset of vertices that meets all the cliques of G. A clique-independent set is a collection of pairwise vertex-disjoint cliques. The clique...
Flavia Bonomo, Maria Chudnovsky, Guillermo Dur&aac...