On the metric dimension, the upper dimension and the resolving number of graphs
This paper deals with three resolving parameters: the metric dimension, the upper dimension and the resolving number. We first answer a question raised by Chartrand and Zhang asking for a characterization of the graphs with equal metric dimension and resolving number. We also solve in the affirmative a conjecture posed by Chartrand, Poisson and Zhang about the realization of the metric dimension and the upper dimension. Finally, we prove that no integer a?4 a ? 4 is realizable as the resolving number of an infinite family of graphs.
metric dimension upper dimension resolving number resolving set