| Autor: |
Chang Wan, Zehui Shao, Nasrin Dehgardi, Rana Khoeilar, Marzieh Soroudi, Asfand Fahad |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
AIMS Mathematics, Vol 5, Iss 6, Pp 5564-5571 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2473-6988 |
| DOI: |
10.3934/math.2020357/fulltext.html |
| Popis: |
We investigate some relationships between two vastly studied parameters of a simple graph $G$. These parameters include mixed domination number (denoted by $\gamma_m(G)$) and 2-independence number ($\beta_2(G)$). For a tree $T$, we obtain $\frac{3}{4}\beta_2(T)\ge \gamma_m(T)$ and characterized all those trees which attain the equality. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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