Distance under Symmetry

چکیده مقاله

Graovac and Pisanski [On the Wiener index of a graph, J. Math. Chem. 8 (1991) 53{62] applied an algebraic approach to generalize the Wiener index by symmetry group of the molecular graph under consideration. The aim of this paper is to continue this work and present some upper and lower bound for this graph invariant.