Key points are not available for this paper at this time.
The \ ( (4, 2) \) -labeling of a graph \ (G\) is a function \ (f: V (G) Z^+\) such that \ (|f (x) -f (y) | 4\) if \ (d (x, y) =1\) and \ (|f (x) -f (y) | 2\) if \ (d (x, y) =2\), for any \ (x, y V (G) \). In this paper, we label different types of graphs such as paths, cycles, complete and complete bipartite graphs, star graphs and ladder graphs to study the bounds of the span \ (\) of these graphs.
Mishra et al. (Tue,) studied this question.