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Note for the conjecture on the generalized 4-connectivity of total graphs of the complete bipartite graph

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  • Li, Yinkui
  • Wei, Liqun

Abstract

The generalized k-connectivity κk(G) of a graph G, introduced by Hager in 1985, is a natural generalization of the concept of connectivity κ(G), which is just for k=2. Rongxia Hao et al. determined the generalized 4-connectivity of the total graphs of the complete equipartition bipartite graph and conjectured that κ4(T(Km,m+1))=2m−1 and κ4(T(Km,n))=2m for n>m+1 and m≥4 in [Appl. Math. Comput. 422 (2022)]. In this paper, we solved this conjecture.

Suggested Citation

  • Li, Yinkui & Wei, Liqun, 2023. "Note for the conjecture on the generalized 4-connectivity of total graphs of the complete bipartite graph," Applied Mathematics and Computation, Elsevier, vol. 458(C).
    • Handle: RePEc:eee:apmaco:v:458:y:2023:i:c:s0096300323003946
    DOI: 10.1016/j.amc.2023.128225
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    References listed on IDEAS

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    1. Li, Shasha & Tu, Jianhua & Yu, Chenyan, 2016. "The generalized 3-connectivity of star graphs and bubble-sort graphs," Applied Mathematics and Computation, Elsevier, vol. 274(C), pages 41-46.
    2. Zhao, Shu-Li & Hao, Rong-Xia & Wei, Chao, 2022. "Internally disjoint trees in the line graph and total graph of the complete bipartite graph," Applied Mathematics and Computation, Elsevier, vol. 422(C).
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