A remark on modified Wiener indices
For any lambda, W-m(lambda)(T) = Sigma(e)[n(1)(e) (.) n(2)(e)](lambda), is the modified Wiener number of tree T. A question was asked in Ref. [6] whether each pair of indices W-m(lambda1) and W-m(lambda2) differs in the sense that there are two trees T-1 and T-2 ordered differently by W-m(lambda1) and W-m(lambda2). In this paper we complete the answer to this question in positive.
modified wiener number wiener number nikolic-trinajstic-randic index a class of modified wiener numbers