| Autor: |
Farahani Mohammad Reza, Jamil Muhammad Kamran, Imran Muhammad |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Applied Mathematics and Nonlinear Sciences, Vol 1, Iss 1, Pp 175-182 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2444-8656 |
| DOI: |
10.21042/AMNS.2016.1.00013 |
| Popis: |
A topological index of a graph G is a numeric quantity related to G which is invariant under automorphisms of G. The Padmakar-Ivan (PI) index of a graph G is defined as PI(G) = Σe=uv∈E(G) [nu + nv], where nu is the number of edges of G lying closer to v than u, analogously nv. In this paper, we compute the vertex PI index of Titania carbon Nanotubes TiO2[m,n]. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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