Discrete Mathematics - Topics on domination
Dominating subgraphs in graphs with some forbidden structures
Discrete Mathematics
The complexity of coloring graphs without long induced paths
Acta Cybernetica
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
3-Colorability ∈ P for P6-free graphs
Discrete Applied Mathematics - The 1st cologne-twente workshop on graphs and combinatorial optimization (CTW 2001)
Clique-Width for 4-Vertex Forbidden Subgraphs
Theory of Computing Systems
Characterization of P6-free graphs
Discrete Applied Mathematics
A simple linear time algorithm for cograph recognition
Discrete Applied Mathematics - Structural decompositions, width parameters, and graph labelings (DAS 5)
Partitioning Graphs into Connected Parts
CSR '09 Proceedings of the Fourth International Computer Science Symposium in Russia on Computer Science - Theory and Applications
Partitioning graphs into connected parts
Theoretical Computer Science
On partitioning a graph into two connected subgraphs
Theoretical Computer Science
Three complexity results on coloring Pk-free graphs
European Journal of Combinatorics
Maximum weight independent sets in (P6,co-banner)-free graphs
Information Processing Letters
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We study P"6-free graphs, i.e., graphs that do not contain an induced path on six vertices. Our main result is a new characterization of this graph class: a graph G is P"6-free if and only if each connected induced subgraph of G on more than one vertex contains a dominating induced cycle on six vertices or a dominating (not necessarily induced) complete bipartite subgraph. This characterization is minimal in the sense that there exists an infinite family of P"6-free graphs for which a smallest connected dominating subgraph is a (not induced) complete bipartite graph. Our characterization of P"6-free graphs strengthens results of Liu and Zhou, and of Liu, Peng and Zhao. Our proof has the extra advantage of being constructive: we present an algorithm that finds such a dominating subgraph of a connected P"6-free graph in polynomial time. This enables us to solve the Hypergraph 2-Colorability problem in polynomial time for the class of hypergraphs with P"6-free incidence graphs.