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Abstract:

A biclique is a set of vertices that induce a complete bipartite graph. A graph G is biclique-Helly when its family of maximal bicliques satisfies the Helly property. If every induced subgraph of G is also biclique-Helly, then G is hereditary biclique-Helly. A graph is C4-dominated when every cycle of length 4 contains a vertex that is dominated by the vertex of the cycle that is not adjacent to it. In this paper we show that the class of hereditary biclique-Helly graphs is formed precisely by those C4-dominated graphs that contain no triangles and no induced cycles of length either 5 or 6. Using this characterization, we develop an algorithm for recognizing hereditary biclique-Helly graphs in O(n2 +αm) time and O(n+m) space. (Here n, m, and α = O(m1/2) are the number of vertices and edges, and the arboricity of the graph, respectively.) As a subprocedure, we show how to recognize those C4-dominated graphs that contain no triangles in O(αm) time and O(n + m) space. Finally, we show how to enumerate all the maximal bicliques of a C4-dominated graph with no triangles in O(n2 + αm) time and O(αm) space. © 2013 Discrete Mathematics and Theoretical Computer Science (DMTCS), Nancy, France.

Registro:

Documento: Artículo
Título:Hereditary biclique-Helly graphs: Recognition and maximal biclique enumeration
Autor:Eguía, M.; Soulignac, F.J.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Computación, Argentina
Palabras clave:Domination problems; Hereditary biclique-Helly graphs; Maximal bicliques; Triangle-free graphs; Biclique-helly; Bicliques; Complete bipartite graphs; Domination problem; Helly properties; Induced cycle; Induced subgraphs; Triangle-free graphs; Graphic methods; Graph theory
Año:2013
Volumen:15
Número:1
Página de inicio:55
Página de fin:74
Título revista:Discrete Mathematics and Theoretical Computer Science
Título revista abreviado:Discrete Math. Theor. Comput. Sci.
ISSN:14627264
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia

Referencias:

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Citas:

---------- APA ----------
Eguía, M. & Soulignac, F.J. (2013) . Hereditary biclique-Helly graphs: Recognition and maximal biclique enumeration. Discrete Mathematics and Theoretical Computer Science, 15(1), 55-74.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia [ ]
---------- CHICAGO ----------
Eguía, M., Soulignac, F.J. "Hereditary biclique-Helly graphs: Recognition and maximal biclique enumeration" . Discrete Mathematics and Theoretical Computer Science 15, no. 1 (2013) : 55-74.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia [ ]
---------- MLA ----------
Eguía, M., Soulignac, F.J. "Hereditary biclique-Helly graphs: Recognition and maximal biclique enumeration" . Discrete Mathematics and Theoretical Computer Science, vol. 15, no. 1, 2013, pp. 55-74.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia [ ]
---------- VANCOUVER ----------
Eguía, M., Soulignac, F.J. Hereditary biclique-Helly graphs: Recognition and maximal biclique enumeration. Discrete Math. Theor. Comput. Sci. 2013;15(1):55-74.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia [ ]