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
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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
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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
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Volumen: | 15
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Número: | 1
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Página de inicio: | 55
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Página de fin: | 74
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Título revista: | Discrete Mathematics and Theoretical Computer Science
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Título revista abreviado: | Discrete Math. Theor. Comput. Sci.
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ISSN: | 14627264
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14627264_v15_n1_p55_Eguia |
Referencias:
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- Dourado, M.C., Protti, F., Szwarcfiter, J.L., Complexity aspects of the Helly property: Graphs and hypergraphs (2009) Electron. J. Comb., DS17, p. 53
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- Makino, K., Uno, T., New algorithms for enumerating all maximal cliques (2004) Algorithm Theory-SWAT 2004, 3111, pp. 260-272. , of Lecture Notes in Comput. Sci., Springer, Berlin
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- Montero, L., (2008) Convergencia y Divergencia Del Grafo Biclique Iterado, , Master's thesis, Universidad de Buenos Aires
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- Szwarcfiter, J.L., A survey on clique graphs (2003) Recent Advances in Algorithms and Combinatorics, 11, pp. 109-136. , C. Linhares Sales and B. Reed, editors, of CMS Books Math./Ouvrages Math. SMC, Springer, New York
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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 [ ]