Ordering Unicyclic Graphs with a Fixed Girth by p-Sombor Indices

Authors

  • Ting Li School of Mathematics & Statistics Guizhou University of Finance and Economics, Guiyang 550025, China.
  • Bingjun li School of Mathematics & Statistics Guizhou University of Finance and Economics, Guiyang 550025, China.

DOI:

https://doi.org/10.24297/jam.v24i.9714

Keywords:

Unicyclic graph, p-Sombor index

Abstract

The p-Sombor index of a graphs G is deffned as, SOp(G) = X xy∈E(G) (d p (x) + d p (y)) 1 p , where d(x) represents the degree of vertex x in graph G. Our focus centers on exploring the p-Sombor index of unicyclic graphs, speciffcally addressing graphs with a predetermined girth. We determine the ffrst four smallest p-Sombor index and identifying the corresponding graphs that achieve these extremes.

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Author Biography

Ting Li, School of Mathematics & Statistics Guizhou University of Finance and Economics, Guiyang 550025, China.

Guizhou University of Finance and Economic

References

Aarman Aashtab, Saieed Akbari, Saba Madadinia, Matineh Noei, and Fatemeh Salehi. On the graphs with

minimum sombor index. MATCH Commun. Math. Comput. Chem, 88(3):553–559, 2022. https://doi.org/10.

/match.88-3.553A.

Hanlin Chen, Wenhao Li, and Jing Wang. Extremal values on the sombor index of trees. MATCH Commun.

Math. Comput. Chem, 87(1):23–49, 2022. https://doi.org/10.46793/match.87-1.023C.

Meng Chen and Yan Zhu. Extremal unicyclic graphs of sombor index. Applied Mathematics and Computation,

:128374, 2024. https://doi.org/10.1016/j.amc.2023.128374.

Kinkar Chandra Das and Ivan Gutman. On sombor index of trees. Applied Mathematics and Computation,

:126575, 2022. https://doi.org/10.1016/j.amc.2021.126575.

Kinkar Chandra Das, Ahmet Sinan C ̧ evik, Ismail Naci Cangul, and Yilun Shang. On sombor index. Symmetry,

(1):140, 2021. https://doi.org/10.3390/sym13010140.

Hanyuan Deng, Zikai Tang, and Renfang Wu. Molecular trees with extremal values of sombor indices. Interna-

tional Journal of Quantum Chemistry, 121(11):e26622, 2021. https://doi.org/10.1002/qua.26622.

Boris Furtula and Ivan Gutman. A forgotten topological index. Journal of Mathematical Chemistry, 53:1184–1190,

https://doi.org/10.1007/s10910-015-0480-z.

Ivan Gutman. Geometric approach to degree-based topological indices: Sombor indices. MATCH Commun.

Math. Comput. Chem, 86(1):11–16, 2021. https://doi.org/10.46793/match.88-3.553A.

Hechao Liu, Hanlin Chen, Qiqi Xiao, Xiaona Fang, and Zikai Tang. More on sombor indices of chemical graphs and

their applications to the boiling point of benzenoid hydrocarbons. International Journal of Quantum Chemistry,

(17):e26689, 2021. https://doi.org/10.1002/qua.26689.

Hechao Liu, Ivan Gutman, Lihua You, and Yufei Huang. Sombor index: review of extremal results and bounds.

Journal of Mathematical Chemistry, 60:771–798, 2022. https://doi.org/10.1007/s10910-022-01342-9.

Hechao Liu, Lihua You, and Yufei Huang. Extremal sombor indices of tetracyclic (chemical) graphs. MATCH

Commun. Math. Comput. Chem, 88(3):573–581, 2022. https://doi.org/10.46793/match.88-3.573L.

Hechao Liu, Lihua You, and Yufei Huang. Ordering chemical graphs by sombor indices and its applications.

MATCH Communications in Mathematical and in Computer Chemistry, 87(1):5–22, 2022. https://doi.org/

46793/match.87-1.005L.

J. A. M ́endez-Berm ́udez, R. Aguilar-S ́anchez, Edil D. Molina, and Jos ́e M. Rodr ́ıguez. Mean sombor index.

Discrete Mathematics Letters, 9:18–25, 2022. https://doi.org/10.47443/dml.2021.s204.

Palaniyappan Nithya, Suresh Elumalai, Selvaraj Balachandran, and Mesfin Masre. Ordering unicyclic graphs

with a fixed girth by sombor indices. MATCH Commun. Math. Comput. Chem, 92(1):205–224, 2024. https:

//doi.org/10.46793/match.92-1.205N.

Izudin Redˇzepovi ́c. Chemical applicability of sombor indices. Journal of the Serbian Chemical Society, 86(5):445–

, 2021. https://doi.org/10.2298/JSC201215006R.

B Senthilkumar, YB Venkatakrishnan, S Balachandran, Akbar Ali, Tariq A Alraqad, and Amjad E Hamza. On

the maximum sombor index of unicyclic graphs with a fixed girth. Journal of Mathematics, (1):8202681, 2022.

https://doi.org/10.1155/2022/8202681.

Wanping Zhang, Jixiang Meng, and Na Wang. Extremal graphs for sombor index with given parameters. Axioms,

(2):203, 2023. https://doi.org/10.3390/axioms12020203.

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Published

2025-03-28

How to Cite

Li, T. ., & li, B. . (2025). Ordering Unicyclic Graphs with a Fixed Girth by p-Sombor Indices. JOURNAL OF ADVANCES IN MATHEMATICS, 24, 12–23. https://doi.org/10.24297/jam.v24i.9714

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