Supported by the Natural Science Foundation of Beijing(1102015);University Scientific Research Project of Hebei Province(Z2014032);the Fundamental Research Funds for the Central Universities(HKXJZD201402,2011B019,3142013025,3142014127)
In the paper, we study the gracefulness of several unconnected graphs related to wheel. For natural number p ≥ 1, t ≥ 1 , let n = 2t + 3,2t + 4 , which proved W. U K (1) p,t U K(2) is graceful; for p≥1, t≥1 ...
Supported by the National Natural Science Foundation of China(11371052,11271267,10971144,11101020);the Natural Science Foundation of Beijing(1102015);the Fundamental Research Funds for the Central Univer sities(2011B019,3142013104)
A labelingfof a graph G is a bijection from its edge set E(G) to the set {1,2,...,|E(G)|}, which is antimagic if for any distinct vertices x and y, the sum of the labels on edges incident to x is different from ...
Supported by Fundamental Research Funds for the Central Universities(Grant No.2011B019);National Natural Science Foundation of China(Grant Nos.11101020,11171026,10201022and10971144); Natural Science Foundation of Beijing(Grant No.1102015)
A labeling f of a graph G is a bijection from its edge set E(G) to the set {1, 2, ..., |E(G)|}, which is antimagic if for any distinct vertices x and y, the sum of the labels on edges incident to x is different ...
Supported by National Natural Science Foundation of China(10201022,10971144);the Natural Science Foundation of Beijing City(1102015);the Fundamental Research Funds for the Central Universities(2011B019)