| UDC: 539.2 : 539.186]:519.17 |
|
| THE ECCENTRIC CONNECTIVITY INDEX OF ARMCHAIR POLYHEX NANOTUBES |
|
| Mahboubeh Saheli, Ali Reza Ashrafi |
|
| email: Ashrafi@kashanu.ac.ir |
|
| Institute of Nanoscience and Nanotechnology, University of Kashan,
Kashan 87317-51167, Iran |
|
| The eccentric connectivity index (G) of the graph G is defined as (G) = uV(G) deg(u)(u) where deg(u) denotes the degree of vertex u and (u) is the largest distance between u and any other vertex v of G. In this paper an exact expression for the eccentric connectivity index of an armchair polyhex nanotube is given.
|
|
| Key words: | Eccentric connectivity index; armchair nanotube
|
|
|
| Language: | English and Macedonian |
|
|
|
