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A new method for computing ABC index of nanostar dendrimers | ||
| Journal of Discrete Mathematics and Its Applications | ||
| مقاله 5، دوره 3، 1-2، شهریور 2013، صفحه 23-31 اصل مقاله (261.49 K) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22061/jmns.2013.475 | ||
| نویسنده | ||
| Mohammad Hosseinzadeh | ||
| Department of Mathematics, Tarbiat Modarres University, P. O. Box: 14115-137, Tehran, I. R. Iran | ||
| تاریخ دریافت: 24 فروردین 1391، تاریخ بازنگری: 07 اسفند 1391، تاریخ پذیرش: 03 خرداد 1395 | ||
| چکیده | ||
| The ABC index is a topological index was defined as $ABC(G)=\sum_{uv\in E}\sqrt{(d_G (u) +d_G (v )- 2)/d_G (u)d_G (v )} $, where $d_G(u)$ denotes degree of vertex u. The second version of ABC index is defined as $ABC_2(G)=\sum_{uv\in E}\sqrt{(n_u+n_v-2)/n_un_v} $ where $n_u $is the number of vertices closer to vertex u than v. In this paper we study some properties of these new topological indices. | ||
| مراجع | ||
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