LOCAL ANTIMAGIC CHROMATIC NUMBER FOR THE CORONA PRODUCT OF WHEEL AND NULL GRAPHS

Let G = (V, E) be a graph of order p and size q having no isolated vertices. A bijection f : E -> {1, 2, 3,..., q} is called a local antimagic labeling if for all uv is an element of E, we have w(u) not equal w(v), the weight w(u) = Sigma(e is an element of E(u)) f(e), where E(u) is the set of edges incident to u. A graph G is local antimagic, if G has a local antimagic labeling. The local antimagic chromatic number chi(la)(G) is defined to be the minimum number of colors taken over all colorings of G induced by local antimagic labelings of G. In this paper, we completely determine the local antimagic chromatic number for the corona product of wheel and null graphs.