A graph labeling is an assignment of integers to the vertices or edges, or both, subject to
certain conditions. Graph labelings were first introduced in the mid 1960s. In the intervening …

Irregular fences are subgraphs of $ P_m\times P_n $ formed with $ m $ copies of $ P_n $ in
such a way that two consecutive copies of $ P_n $ are connected with one or two edges; if …