Kavli Affiliate: Wei Gao
| First 5 Authors: Wei Gao, , , ,
| Summary:
Let $G=(V(G),E(G))$ be a graph and $d(v)$ be the degree of the vertex $vin
V(G)$. The exponential reduced Sombor index of $G$, denoted by
$e^{SO_{red}}(G)$, is defined as $$e^{SO_{red}}(G)=sum_{uvin
E(G)}e^{sqrt{(d(u)-1)^2+(d(v)-1)^2}}.$$ We obtain a characterization of
extremal trees with the maximal exponential reduced Sombor index among all
chemical trees of order $n$. This result shows the conjecture on the
exponential reduced Sombor index proposed by Liu, You, Tang and Liu [On the
reduced Sombor index and its applications, MATCH Commun. Math. Comput. Chem. 86
(2021) 729–753] is negative.
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