Randić energy of digraphs
We assume that D is a directed graph with vertex set V(D)={v1,…vn} and arc set E(D). A VDB topological index φ of D is defined asφ(D)=12∑uv∈E(D)φdu+,dv−, where du+ and dv− denote the outdegree and indegree of vertices u and v, respectively, and φi,j is a bivariate symmetric function defined on nonne...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844022031620 |