- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
remarks Beside the above conjecture one can study some more problems related to the results of this paper. As a diversity of the Balaban index J, further indices were developed omitting the fraction factor m/(m − n + 2) before the sum, and it would be interesting to explore similar bounds as in this paper for indices introduced in . Shortly speaking, the main result of our paper is showing that 0 (beside π and other values mentioned in ) is also an accumulation point for Balaban index. From this point of view, it would be interesting problem to find some more new accumulation points for this index. In this paper, we were restricted to simple cubic but general graphs. Note that from the point of view of chemistry one interesting class of cubic multigraphs are annulenes, and also some other particular cubic graphs are. So as further work one could extend our study to multigraphs as well as restrict to some particular regular graphs. See [5,6,9,14,15] for some (chemical) results of such classes of graphs.