Open packing saturation number of a graph
Abstract
In a graph G=(V,E), a non-empty set S⊆V(G) is said to be an open packing set if no two vertices of S have a common neighbor in G. Let v∈V and let OS(v) denote the maximum cardinality of an open packing set in G which contains v. Then OS(G)=min{OS(v):v∈V} is called the open packing saturation number of G. In this paper, we initiate a study on this parameter.
Communicated by S. Klavcar