English

Various spectra and energies of subgroup generating bipartite graph

Group Theory 2026-01-08 v1

Abstract

Let L(G)L(G) be the set of all subgroups of a group GG. The subgroup generating bipartite graph B(G)\mathcal{B}(G) defined on GG is a bipartite graph whose vertex set is partitioned into two sets G×GG \times G and L(G)L(G), and two vertices (a,b)G×G(a, b) \in G \times G and HL(G)H \in L(G) are adjacent if HH is generated by aa and bb. In this paper, we compute various spectra and energies of B(G)\mathcal{B}(G) and determine whether B(G)\mathcal{B}(G) is hypoenergetic, hyperenergetic, CN-hyperenergetic, L-hyperenergetic or Q-hyperenergetic if GG is a dihedral group of order 2p2p and 2p22p^2 and dicyclic group of order 4p4p and 4p24p^2, where pp is any prime. We also show that B(G)\mathcal{B}(G) satisfies E-LE conjecture for these groups.

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Cite

@article{arxiv.2601.04004,
  title  = {Various spectra and energies of subgroup generating bipartite graph},
  author = {Shrabani Das and Ahmad Erfanian and Rajat Kanti Nath},
  journal= {arXiv preprint arXiv:2601.04004},
  year   = {2026}
}

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23 pages