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arXiv · 2605.09873

On distance spectral radius of power hypertrees with given number of pendant paths of fixed length

Yanna Wang·Xuli Qi
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Abstract

The distance spectral radius of a connected hypergraph is the largest eigenvalue of the distance matrix of the hypergraph. A pendant path of length l with l greater than or equal to 1 in a hypergraph G at vertex v sub l plus 1 is a path consisting of vertices and edges v1 e1 v2 up to vl el v(l+1). The vertex v(l+1) has degree at least 2, vertex v1 has degree 1, and each vertex vi has degree 2 for i from 2 to l. Every vertex belonging to edge ei except vi and v(i+1) has degree 1 for all i from 1 to l. We find the unique hypertree that maximizes or minimizes the distance spectral radius among all r-th power hypertrees with m edges and k pendant paths of length l, where r is no less than 3, k and l are no less than 1, and the product of k and l is smaller than m.

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Yanna Wang, Xuli Qi. 2026-05-11. On distance spectral radius of power hypertrees with given number of pendant paths of fixed length. https://arxiv.org/abs/2605.09873

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