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» The vertex-cover polynomial of a graph
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WG
2001
Springer
15 years 2 months ago
Approximation of Pathwidth of Outerplanar Graphs
There exists a polynomial time algorithm to compute the pathwidth of outerplanar graphs [3], but the large exponent makes this algorithm impractical. In this paper, we give an alg...
Fedor V. Fomin, Hans L. Bodlaender
GC
2007
Springer
14 years 9 months ago
Precoloring Extension of Co-Meyniel Graphs
The pre-coloring extension problem consists, given a graph G and a set of nodes to which some colors are already assigned, in finding a coloring of G with the minimum number of co...
Vincent Jost, Benjamin Lévêque, Fr&ea...
ENDM
2010
122views more  ENDM 2010»
14 years 9 months ago
Complexity dichotomy on degree-constrained VLSI layouts with unit-length edges
Deciding whether an arbitrary graph admits a VLSI layout with unit-length edges is NP-complete [1], even when restricted to binary trees [7]. However, for certain graphs, the prob...
Vinícius G. P. de Sá, Celina M. Herr...
76
Voted
DAM
2008
123views more  DAM 2008»
14 years 9 months ago
Polar cographs
Polar graphs are a natural extension of some classes of graphs like bipartite graphs, split graphs and complements of bipartite graphs. A graph is (s, k)-polar if there exists a pa...
Tinaz Ekim, Nadimpalli V. R. Mahadev, Dominique de...
95
Voted
SARA
2009
Springer
15 years 4 months ago
A New Formula Rewriting by Reasoning on a Graphical Representation of SAT Instances
In this paper, we propose a new approach for solving the SAT problem. This approach consists in representing SAT instances thanks to an undirected graph issued from a polynomial t...
Philippe Jégou, Lionel Paris