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math.CO2022
New bounds of extended energy of a graph
Abujafar Mandal, Sk. Md. Abu Nayeem
The extended adjacency matrix of a graph with vertices is a real symmetric matrix of order whose -th entry is the average of the ratio of the degree of the v…
math.CO2022
On Kirchhoff index and number of spanning trees of linear pentagonal cylinder and Mobius chain graph
Md. Abdus Sahir, Sk. Md. Abu Nayeem
In this paper, we derive closed-form formulas for Kirchhoff index and Wiener index of linear pentagonal cylinder graph and linear pentagonal Mobius chain graph. We also obtain expl…