Injective coloring of plane graphs with girth 5

An injective coloring of a graph is a vertex coloring where two vertices have distinct colors if a path of length two exists between them. Let G be a plane graph with g(G)>=5 and @g"i(G) be the injective chromatic number of G. In this paper, we improve some known results by proving that @g"i(G)@[email protected]+3 if @D(G)>=35 and @g"i(G)@[email protected]+6 for arbitrary @D(G).