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Price distribution over 46 days • 1 price levels

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Most common price: £80 (46 days, 100.0%)

Price range: £80 - £80

Price levels: 1 different prices over 46 days

Description

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.

Product Specifications

Brand: Südwestdeutscher Verlag für Hochschulschriften
Format: paperback
ASIN: 3838119541
Category: Books > Subjects > Computing & Internet
Domain: Amazon UK
Release Date: 26 August 2010
Listed Since: 31 August 2010

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Südwestdeutscher Verlag für Hochschulschriften Isomorphism Testing for Restricted Graph Classes: On the complexity of isomorphism testing and reachability problems for restricted graph classes

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It has never been this cheap. We have no record of a lower price.

Südwestdeutscher Verlag für Hochschulschriften Isomorphism Testing for Restricted Graph Classes: On the complexity of isomorphism testing and reachability problems for restricted graph classes

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