| Autor: |
Hameed Saira, Alamer Ahmed, Javaid Muhammad, Ahmad Uzma |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Main Group Metal Chemistry, Vol 45, Iss 1, Pp 100-105 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2191-0219 |
| DOI: |
10.1515/mgmc-2022-0011 |
| Popis: |
For any simple connected graph G of order n, having eigen spectrum μ 1 ≥ μ 2 ≥ ⋯ ≥ μ n with middle eigenvalues μ H and μ L, where H = ⌊(n + 1)/2⌋ and L = ⌈(n + 1)/2⌉, the HOMO–LUMO gap is defined as as ΔG = μ H = μ L. In this article, a simple upper bound for the HOMO–LUMO gap corresponding to a special class of connected bipartite graphs is estimated. As an application, the upper bounds for the HOMO–LUMO gap of certain classes of nanotubes and nanotori are estimated. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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