9783838119540 - isomorphism testing for restricted graph classes: on the complexity of isomorphism testing and reachability problems for restricted graph classes di wagner, fabian (5 risultati)

Lingua: Inglese
Editore: Südwestdeutscher Verlag für Hochschulschriften, 2015
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Da: preigu, Osnabrück, Germaniapreigu
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Taschenbuch. Condizione: Neu. Isomorphism Testing for Restricted Graph Classes | On the complexity of isomorphism testing and reachability problems for restricted graph classes | Fabian Wagner | Taschenbuch | 244 S. | Englisch | 2015 | Südwestdeutscher Verlag für Hochschulschriften | EAN 9783838119540 | Verantwortliche Person fü…r die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.

Lingua: Inglese
Editore: Südwestdeutscher Verlag Für Hochschulschriften AG Co. KG Nov 2015, 2015
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Da: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, GermaniaBuchWeltWeit Ludwig Meier e.K.
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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The graph isomorphism problem (GI) consists of deciding whether there is a bijection between the vertices of two graphs, which preserves the adjacency relations. GI is not known to be NP-complete nor to be in P. The enormous gap be…tween the known upper and lower bound has motivated a study of isomorphism restricted to special classes of graphs where this gap can be reduced. We prove for the classes of planar graphs, K_{3,3}-minor free and K_5-minor free graphs, that isomorphism testing is in logspace. For graphs of bounded treewidth we prove a new upper bound LogCFL. We also consider the complexity of the isomorphism problem when groups or quasigroups are given in table representation. Because of all these results in the context of logarithmic space complexity classes we also consider reachability problems. Reachability is a widely studied problem especially in the space setting, it asks in a directed graph with two designated vertices s and t whether there is a path from s to t. We improve some upper bounds of the reachability problems for the mentioned graph classes. 244 pp. Englisch.

Lingua: Inglese
Editore: Südwestdeutscher Verlag für Hochschulschriften, 2010
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Da: moluna, Greven, Germaniamoluna
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Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Wagner FabianFabian Wagner studied computer science at University of Ulm,he received his doctorate in 2010 from Institute of TheoreticalComputer Science in Ulm.The graph isomorphism problem (GI) consis…ts of deciding whether there.

Lingua: Inglese
Editore: Südwestdeutscher Verlag Für Hochschulschriften Aug 2010, 2010
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Da: buchversandmimpf2000, Emtmannsberg, BAYE, Germaniabuchversandmimpf2000
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Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The graph isomorphism problem (GI) consists of deciding whether there is a bijection between the vertices of two graphs, which preserves the adjacency relations. GI is not known to be NP-complete nor to be in P. The enormous gap betwee…n the known upper and lower bound has motivated a study of isomorphism restricted to special classes of graphs where this gap can be reduced. We prove for the classes of planar graphs, K_{3,3}-minor free and K_5-minor free graphs, that isomorphism testing is in logspace. For graphs of bounded treewidth we prove a new upper bound LogCFL. We also consider the complexity of the isomorphism problem when groups or quasigroups are given in table representation. Because of all these results in the context of logarithmic space complexity classes we also consider reachability problems. Reachability is a widely studied problem especially in the space setting, it asks in a directed graph with two designated vertices s and t whether there is a path from s to t. We improve some upper bounds of the reachability problems for the mentioned graph classes.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 244 pp. Englisch.

Lingua: Inglese
Editore: Südwestdeutscher Verlag Für Hochschulschriften, 2010
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Da: AHA-BUCH GmbH, Einbeck, GermaniaAHA-BUCH GmbH
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Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The graph isomorphism problem (GI) consists of deciding whether there is a bijection between the vertices of two graphs, which preserves the adjacency relations. GI is not known to be NP-complete nor to be in P. The enormous gap between… the known upper and lower bound has motivated a study of isomorphism restricted to special classes of graphs where this gap can be reduced. We prove for the classes of planar graphs, K_{3,3}-minor free and K_5-minor free graphs, that isomorphism testing is in logspace. For graphs of bounded treewidth we prove a new upper bound LogCFL. We also consider the complexity of the isomorphism problem when groups or quasigroups are given in table representation. Because of all these results in the context of logarithmic space complexity classes we also consider reachability problems. Reachability is a widely studied problem especially in the space setting, it asks in a directed graph with two designated vertices s and t whether there is a path from s to t. We improve some upper bounds of the reachability problems for the mentioned graph classes.