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Computing the Kirchhoff Index of Linear Phenylenes

Yujun Yang1
1School of Mathematics and Information Science, Yantai University, Yantai, Shandong 264005, P.R. China

Abstract

The Laplacian eigenvalues of linear phenylenes \( PH_n \) are partially determined, and a simple closed-form formula for the Kirchhoff index of \( PH_n \) is derived in terms of the index \( n \).