is there any sagemath code to find a dominating set D with the property that distance between any two vertices in D is atleast 3?
Is there any sagemath code to find a dominating set D with the property that distance between any two vertices in D is atleast 3?
Your problem is not well defined. From the definition of a dominating set, a vertex in D is at distance at most two from another vertex in D. The condition that vertices in D must be at distance at least 3 from each other can therefore not be satisfied.