%0 Book %T Graph powers: hardness results, good characterizations and efficient algorithms %A Nguyen, Ngoc Tuy %D 2009 %G English %F 616733836 %O vorgelegt von Ngoc Tuy Nguyen %O Rostock, Univ., Fak. f. Informatik u. Elektrotechnik, Diss., 2009 %X Given a graph H = (V_H,E_H) and a positive integer k, the k-th power of H, written H^k, is the graph obtained from H by adding edges between any pair of vertices at distance at most k in H; formally, H^k = (V_H, {xy | 1 <= d_H (x, y) <= k}). A graph G is the k-th power of a graph H if G = H^k, and in this case, H is a k-th root of G. Our investigations deal with the computational complexity of recognizing k-th powers of general graphs as well as restricted graphs. This work provides new NP-completeness results, good characterizations and efficient algorithms for graph powers. %L 510 %9 theses %9 Text %9 Hochschulschrift %U http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2009-0206-0 %U http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2009-0206-0&pdf %U http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2009-0206-0 %U http://rosdok.uni-rostock.de/metadata/rosdok_disshab_000000000350 %U http://d-nb.info/100097877X/34