Author

A. Jahanbani

2 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

Open access Aug 2026

A Degree-Based Spectral Radius Conjecture Refuted: The Second Zagreb Matrix of Unicyclic Graphs

A conjecture in [MATCH Commun. Math. Comput. Chem. 89 (2023) 513–530] states that for any unicyclic graph G of order n ≥3, the spectral radius of any degree–based matrix (i.e., a matrix whose entries are functions of vertex degrees) lies between ρ(Cn) and ρ(S+ 3), where S+ 3 denotes the unicyclic graph obtained by atta...

An Jiang, Xue-Wu Zuo, Gen-Jie Wang et al. · Match-communications in Math... · 0 citations

Open access Aug 2026

On the Degree-Ratio Sombor Index: Corrections and New Bounds

The degree-ratio Sombor index (DRSO) is a recently introduced geometric degree-based topological invariant. First, we correct an erroneous lower bound involving the Sombor index and rectify the characterization of extremal graphs from the original work on this index [11]. Subsequently, we investigate the relationship b...

Zhou-Jian Shao, A. Jahanbani · Match-communications in Math... · 0 citations