Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs
The sum-connectivity index of a graph G is defined as the sum of weights 1/du+dv over all edges uv of G, where du and dv are the degrees of the vertices u and v in graph G, respectively. In this paper, we give a sharp lower bound on the sum-connectivity index unicyclic graphs of order n≥7 and diamet...
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| Format: | Article |
| Language: | English |
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Hindawi Limited
2021-01-01
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| Series: | Journal of Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2021/8391480 |
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doaj-679e455741f246d2b1018d1fc864a3ca2021-09-13T01:24:00ZengHindawi LimitedJournal of Mathematics2314-47852021-01-01202110.1155/2021/8391480Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic GraphsMaryam Atapour0Department of Mathematics and Computer ScienceThe sum-connectivity index of a graph G is defined as the sum of weights 1/du+dv over all edges uv of G, where du and dv are the degrees of the vertices u and v in graph G, respectively. In this paper, we give a sharp lower bound on the sum-connectivity index unicyclic graphs of order n≥7 and diameter DG≥5.http://dx.doi.org/10.1155/2021/8391480 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Maryam Atapour |
| spellingShingle |
Maryam Atapour Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs Journal of Mathematics |
| author_facet |
Maryam Atapour |
| author_sort |
Maryam Atapour |
| title |
Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs |
| title_short |
Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs |
| title_full |
Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs |
| title_fullStr |
Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs |
| title_full_unstemmed |
Sharp Lower Bounds of the Sum-Connectivity Index of Unicyclic Graphs |
| title_sort |
sharp lower bounds of the sum-connectivity index of unicyclic graphs |
| publisher |
Hindawi Limited |
| series |
Journal of Mathematics |
| issn |
2314-4785 |
| publishDate |
2021-01-01 |
| description |
The sum-connectivity index of a graph G is defined as the sum of weights 1/du+dv over all edges uv of G, where du and dv are the degrees of the vertices u and v in graph G, respectively. In this paper, we give a sharp lower bound on the sum-connectivity index unicyclic graphs of order n≥7 and diameter DG≥5. |
| url |
http://dx.doi.org/10.1155/2021/8391480 |
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AT maryamatapour sharplowerboundsofthesumconnectivityindexofunicyclicgraphs |
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