The number of convergent graphs under the biclique operator with no twin vertices is finite
The biclique graph of G, K B (G), is the intersection graph of the bicliques of G. Given a graph G, the iterated biclique graph of G, K B k (G), is the graph defined iteratively as follows: K B k + 1 (G) = K B (K B k (G)). Say that a graph G diverges (resp. converges) under the operator KB whenever...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15710653_v35_nC_p241_Groshaus http://hdl.handle.net/20.500.12110/paper_15710653_v35_nC_p241_Groshaus |
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paper:paper_15710653_v35_nC_p241_Groshaus2023-06-08T16:24:25Z The number of convergent graphs under the biclique operator with no twin vertices is finite Groshaus, Marina E. Montero, Leandro P. Biclique biclique graph clique graph iterated biclique operator The biclique graph of G, K B (G), is the intersection graph of the bicliques of G. Given a graph G, the iterated biclique graph of G, K B k (G), is the graph defined iteratively as follows: K B k + 1 (G) = K B (K B k (G)). Say that a graph G diverges (resp. converges) under the operator KB whenever lim k → ∞ V (K B k (G)) = ∞ (resp. lim k → ∞ K B k (G) = K B m (G) for some m). Each of these behaviours were recently characterized. These characterizations lead to a O (n 4) time algorithm for deciding the divergence or convergence of a graph. In this work we prove that any graph with at least 7 bicliques diverges under the biclique operator. Furthermore, we prove that graphs with no twin vertices that are not divergent have at most 12 vertices, which leads to a linear time algorithm to decide if a graph converges or diverges under the biclique operator. © 2009 Elsevier B.V. All rights reserved. Fil:Groshaus, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Montero, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15710653_v35_nC_p241_Groshaus http://hdl.handle.net/20.500.12110/paper_15710653_v35_nC_p241_Groshaus |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Biclique biclique graph clique graph iterated biclique operator |
spellingShingle |
Biclique biclique graph clique graph iterated biclique operator Groshaus, Marina E. Montero, Leandro P. The number of convergent graphs under the biclique operator with no twin vertices is finite |
topic_facet |
Biclique biclique graph clique graph iterated biclique operator |
description |
The biclique graph of G, K B (G), is the intersection graph of the bicliques of G. Given a graph G, the iterated biclique graph of G, K B k (G), is the graph defined iteratively as follows: K B k + 1 (G) = K B (K B k (G)). Say that a graph G diverges (resp. converges) under the operator KB whenever lim k → ∞ V (K B k (G)) = ∞ (resp. lim k → ∞ K B k (G) = K B m (G) for some m). Each of these behaviours were recently characterized. These characterizations lead to a O (n 4) time algorithm for deciding the divergence or convergence of a graph. In this work we prove that any graph with at least 7 bicliques diverges under the biclique operator. Furthermore, we prove that graphs with no twin vertices that are not divergent have at most 12 vertices, which leads to a linear time algorithm to decide if a graph converges or diverges under the biclique operator. © 2009 Elsevier B.V. All rights reserved. |
author |
Groshaus, Marina E. Montero, Leandro P. |
author_facet |
Groshaus, Marina E. Montero, Leandro P. |
author_sort |
Groshaus, Marina E. |
title |
The number of convergent graphs under the biclique operator with no twin vertices is finite |
title_short |
The number of convergent graphs under the biclique operator with no twin vertices is finite |
title_full |
The number of convergent graphs under the biclique operator with no twin vertices is finite |
title_fullStr |
The number of convergent graphs under the biclique operator with no twin vertices is finite |
title_full_unstemmed |
The number of convergent graphs under the biclique operator with no twin vertices is finite |
title_sort |
number of convergent graphs under the biclique operator with no twin vertices is finite |
publishDate |
2009 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15710653_v35_nC_p241_Groshaus http://hdl.handle.net/20.500.12110/paper_15710653_v35_nC_p241_Groshaus |
work_keys_str_mv |
AT groshausmarinae thenumberofconvergentgraphsunderthebicliqueoperatorwithnotwinverticesisfinite AT monteroleandrop thenumberofconvergentgraphsunderthebicliqueoperatorwithnotwinverticesisfinite AT groshausmarinae numberofconvergentgraphsunderthebicliqueoperatorwithnotwinverticesisfinite AT monteroleandrop numberofconvergentgraphsunderthebicliqueoperatorwithnotwinverticesisfinite |
_version_ |
1768541769568354304 |