Kontakt
Jak kupować
Dostawa
Doradca ds. zakupów
Isomorphism Testing for Restricted Graph Classes
On the complexity of isomorphism testing and reachability problems for restricted graph classes
Angielski
171 b
Nawet do 30 dni na zwrot
Klienci kupili także
/
Miękka
20.29
€
/
Miękka
34.99
€
/
Twarda
170.00
€
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.
Informacje o książce
Angielski
Podaruj tę książkę jeszcze dziś
To łatwe
1 Dodaj książkę do koszyka i wybierz „dostarczyć jako prezent” 2 W odpowiedzi wyślemy Ci bon 3 Książka dotrze na adres obdarowanegoMogłoby Cię także zainteresować
/
Miękka
7.79
€
/
Miękka
17.69
€
/
Miękka
10.89
€
/
Miękka
13.89
€
/
Miękka
10.89
€
/
Kalendarz
7.59
€
Cześć! Jestem Libroamiko, Twój doradca książkowy.
Jak mogę Ci pomóc?