A labeling/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 anAy,the sum of the labels on edges incident to x is different from the sum of the labels on edges incident to y.A graph G is antimagic if G has an f which is antimagic.Hartsfield and Ringel conjectured in 1990 that every connected graph other than K2 is antimagic.In this paper,we show that if G1 is an m-vertex graph with maximum degree at most 6r+l,and G2 is an n-vertex(2r)-regular graph(m≥n≥3),then the join graph G1 v G2 is antimagic.
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 the sum of the labels on edges incident to y. A graph G is antimagic if G has anfwhich is antimagic. Hartsfield and Ringel conjectured in 1990 that every connected graph other than K2 is antimagic. In this paper, we show that if G1 is an m-vertex graph with maximum degree at most 6r+ 1, and G2 is an n-vertex (2r)-regular graph (m≥n≥3), then the join graph G1 v G2 is antimagic.