T-Spherical Fuzzy Graphs Framework for Wi-Fi Networks and Cybersecurity Based on Normal Dominating Mechanisms

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Waheed Ahmad Khan, Misal Ahmad, Muhammad Asshad, Omar Almomani, Taher M. Ghazal

Abstract

Intelligent communication and cybersecurity networks require mathematical models capable of representing complex uncertainty while ensuring reliable network control. Existing domination models for fuzzy graph structures cannot adequately capture the richer uncertainty represented by T-spherical fuzzy information. In this study, we introduce the concept of normal domination in T-spherical fuzzy graphs (T-SFGs), where uncertainty is characterized by membership, neutrality and non-membership degrees satisfying the generalized T-spherical constraint. Fundamental concepts of normal domination are established together with their theoretical properties. The proposed framework provides a unified model for intelligent network analysis by integrating T-spherical fuzzy information with domination theory. Applications to Wi-Fi gateway selection and cybersecurity threat assessment demonstrate its practical effectiveness while comparative analysis confirms that the proposed T-SFG framework offers improved modeling flexibility, enhanced decision-making accuracy and broader applicability than existing fuzzy graph-based domination models.

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References

  1. E.J. Cockayne, S.T. Hedetniemi, Towards a Theory of Domination in Graphs, Networks 7 (1977), 247–261. https://doi.org/10.1002/net.3230070305.
  2. T.W. Haynes, S.T. Hedetniemi, M.A. Henning (eds), Topics in Domination in Graphs, Springer International Publishing, 2020. https://doi.org/10.1007/978-3-030-51117-3.
  3. L.A. Zadeh, Fuzzy Sets, Inf. Control 8 (1965), 338–353. https://doi.org/10.1016/S0019-9958(65)90241-X.
  4. K.T. Atanassov, Intuitionistic Fuzzy Sets, Fuzzy Sets Syst. 20 (1986), 87–96. https://doi.org/10.1016/S0165-0114(86)80034-3.
  5. R.R. Yager, Pythagorean Fuzzy Subsets, in: 2013 Joint IFSA World Congress and NAFIPS Annual Meeting (IFSA/NAFIPS), IEEE, 2013, pp. 57–61. https://doi.org/10.1109/IFSA-NAFIPS.2013.6608375.
  6. B.C. Cuong, Picture Fuzzy Sets, J. Comput. Sci. Cybern. 30 (2014), 409–420. https://doi.org/10.15625/1813-9663/30/4/5032.
  7. F. Kutlu Gündoğdu, C. Kahraman, Spherical Fuzzy Sets and Spherical Fuzzy TOPSIS Method, J. Intell. Fuzzy Syst. 36 (2019), 337–352. https://doi.org/10.3233/JIFS-181401.
  8. S. Ashraf, S. Abdullah, T. Mahmood, F. Ghani, T. Mahmood, Spherical Fuzzy Sets and Their Applications in Multi-Attribute Decision Making Problems, J. Intell. Fuzzy Syst. 36 (2019), 2829–2844. https://doi.org/10.3233/JIFS-172009.
  9. T. Mahmood, K. Ullah, Q. Khan, N. Jan, An Approach toward Decision-Making and Medical Diagnosis Problems Using the Concept of Spherical Fuzzy Sets, Neural Comput. Appl. 31 (2019), 7041–7053. https://doi.org/10.1007/s00521-018-3521-2.
  10. Ö.F. Görçün, P. Chatterjee, Ž. Stević, H. Küçükönder, An Integrated Model for Road Freight Transport Firm Selection in Third-Party Logistics Using T-Spherical Fuzzy Sets, Transp. Res. Part E Logist. Transp. Rev. 186 (2024), 103542. https://doi.org/10.1016/j.tre.2024.103542.
  11. M. Sarfraz, M. Azeem, Parametric Similarity Measurement of T-Spherical Fuzzy Sets for Enhanced Decision-Making, Int. J. Knowl. Innov. Stud. 2 (2024), 29–44. https://doi.org/10.56578/ijkis020104.
  12. P. Wang, A Novel Decision Making Approach to Analyze Optimization of Key Factors in Sports Culture Dissemination Using T-Spherical Fuzzy Information, IEEE Access 13 (2025), 37737–37747. https://doi.org/10.1109/ACCESS.2025.3543979.
  13. F. Karamaz, F. Karaaslan, Distance Measures of r,s,t-Spherical Fuzzy Sets and Their Applications in MCGDM Based on TOPSIS, J. Supercomput. 81 (2025), 173. https://doi.org/10.1007/s11227-024-06560-5.
  14. A. Rosenfeld, Fuzzy Graphs, in: Fuzzy Sets and their Applications to Cognitive and Decision Processes, Elsevier, pp. 77–95, (1975). https://doi.org/10.1016/B978-0-12-775260-0.50008-6.
  15. K.T. Atanassov, A. Shannon, A First Step to a Theory of the Intuitionistic Fuzzy Graphs, in: Proceedings of the First Workshop on Fuzzy Based Expert Systems, Sofia, pp. 59–61, 1994.
  16. C. Zuo, A. Pal, A. Dey, New Concepts of Picture Fuzzy Graphs with Application, Mathematics 7 (2019), 470. https://doi.org/10.3390/math7050470.
  17. X. Shi, S. Kosari, W.A. Khan, Some Novel Concepts of Interval-Valued Picture Fuzzy Graphs with Applications toward the Transmission Control Protocol and Social Networks, Front. Phys. 11 (2023), 1260785. https://doi.org/10.3389/fphy.2023.1260785.
  18. S. Naz, S. Ashraf, M. Akram, A Novel Approach to Decision-Making with Pythagorean Fuzzy Information, Mathematics 6 (2018), 95. https://doi.org/10.3390/math6060095.
  19. W.A. Khan, I.A. Shah, T.T. Nguyen, M.H. Pham, H.V. Pham, Some Concepts of Interval Valued Pythagorean Fuzzy Graphs and Analysis of Socioeconomic Conditions of Communities, IEEE Access 13 (2025), 55140–55155. https://doi.org/10.1109/ACCESS.2025.3553351.
  20. M. Akram, D. Saleem, T. Al-Hawary, Spherical Fuzzy Graphs with Application to Decision-Making, Math. Comput. Appl. 25 (2020), 8. https://doi.org/10.3390/mca25010008.
  21. B. Some, P. Das, A. Pal, Balance Spherical Fuzzy Graph and Their Applications, TWMS J. Appl. Eng. Math. 15 (2025), 728–747.
  22. B. Some, A. Pal, Comparative Energy Analysis of Spherical Fuzzy Indices in Decision-Making Problems, Int. J. Math. Ind. 17 (2025), 2450027. https://doi.org/10.1142/S2661335224500278.
  23. A. Guleria, R.K. Bajaj, T-Spherical Fuzzy Graphs: Operations and Applications in Various Selection Processes, Arab. J. Sci. Eng. 45 (2020), 2177–2193. https://doi.org/10.1007/s13369-019-04107-y.
  24. L. Zedam, N. Jan, E. Rak, T. Mahmood, K. Ullah, An Approach towards Decision-Making and Shortest Path Problems Based on T-Spherical Fuzzy Information, Int. J. Fuzzy Syst. 22 (2020), 1521–1534. https://doi.org/10.1007/s40815-020-00820-1.
  25. F. Karaaslan, F. Karamaz, Some New Product Operations of T-Spherical Fuzzy Graphs and an Application of T-Spherical Fuzzy Graphs in MCGDM, Artif. Intell. Rev. 56 (2023), 13663–13689. https://doi.org/10.1007/s10462-023-10477-5.
  26. S.U. Khan, F. Hussain, T. Senapati, S. Hussain, Z. Ali, et al., Analysis of Computer Communication Networks Based on Evaluation of Domination and Double Domination for Interval-Valued T-Spherical Fuzzy Graphs and Their Applications in Decision-Making Problems, Eng. Appl. Artif. Intell. 139 (2025), 109650. https://doi.org/10.1016/j.engappai.2024.109650.
  27. T.W. Haynes, S. Hedetniemi, P. Slater, Fundamentals of Domination in Graphs, CRC Press, 2013. https://doi.org/10.1201/9781482246582.
  28. A. Somasundaram, S. Somasundaram, Domination in Fuzzy Graphs – I, Pattern Recognit. Lett. 19 (1998), 787–791. https://doi.org/10.1016/S0167-8655(98)00064-6.
  29. A. Nagoorgani, V.T. Chandrasekaran, Domination in Fuzzy Graph, Adv. Fuzzy Sets Syst. 1 (2006), 17–26.
  30. A. Nagoor Gani, K. Prasanna Devi, 2-Domination in Fuzzy Graphs, Int. J. Fuzzy Math. Arch. 9 (2015), 119–124.
  31. A. Nagoor Gani, K. Prasanna Devi, M. Pal, Reduction of Domination Parameter in Fuzzy Graphs, Glob. J. Pure Appl. Math. 13 (2017), 3307–3315.
  32. R. Parvathi, G. Thamizhendhi, Domination in Intuitionistic Fuzzy Graphs, Notes Intuitionistic Fuzzy Sets 16 (2010), 39–49.
  33. W.A. Khan, K. Ali, A. Fida, M. Asif, H.V. Pham, et al., Some Novel Concepts of Intuitionistic Fuzzy Directed Graphs with Application in Selecting a Suitable Place for Opening Restaurant, Heliyon 10 (2024), e33950. https://doi.org/10.1016/j.heliyon.2024.e33950.
  34. H. Guan, W.A. Khan, A. Fida, K. Ali, J. Shafi, et al., Dominations in Intutionistic Fuzzy Directed Graphs with Applications towards Influential Graphs, Mathematics 12 (2024), 872. https://doi.org/10.3390/math12060872.
  35. S. Banitalebi, R.A. Borzooei, Domination in Pythagorean Fuzzy Graphs, Granul. Comput. 8 (2023), 959–966. https://doi.org/10.1007/s41066-023-00362-5.
  36. R. Ismail, S.U. Khan, S. Al Ghour, E.H.A. Al-Sabri, M.M.S. Mohammed, et al., A Complete Breakdown of Politics Coverage Using the Concept of Domination and Double Domination in Picture Fuzzy Graph, Symmetry 15 (2023), 1044. https://doi.org/10.3390/sym15051044.
  37. W.A. Khan, A. Zahid, H. Rashmanlou, Novel Concepts of Strong Paired Domination in Interval-Valued Picture Fuzzy Graphs and Its Applications Towards Selection Criteria, J. Appl. Math. Comput. 70 (2024), 6165–6193. https://doi.org/10.1007/s12190-024-02212-2.
  38. W.A. Khan, M. Asif, A. Ahmed, S. Abbas, M. Yousaf, Decision Making Based on Strong Paired Domination in Spherical Fuzzy Graphs, Arab. J. Sci. Eng. 50 (2025), 19187–19199. https://doi.org/10.1007/s13369-025-10132-x.
  39. A. Rana, A Survey on the Domination of Fuzzy Graphs, Discret. Math. Algorithms Appl. 13 (2021), 2130001. https://doi.org/10.1142/S1793830921300010.
  40. S. Banitalebi, S.S. Ahn, Y.B. Jun, R.A. Borzooei, Normal m-Domination and Inverse m-Domination in Pythagorean Fuzzy Graphs with Application in Decision Making, J. Intell. Fuzzy Syst. 43 (2022), 5053–5062. https://doi.org/10.3233/JIFS-220319.
  41. N. Jan, T. Mahmood, L. Zedam, L. Abdullah, K. Ullah, Analysis of Double Domination by Using the Concept of Spherical Fuzzy Information with Application, J. Ambient Intell. Humaniz. Comput. 14 (2023), 1147–1162. https://doi.org/10.1007/s12652-021-03370-y.