Yi Xu

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20172026

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3 papers · 1 filter

math.CO2026

Tensor Spectral Stability for Uniform Hypergraphs with Bounded Matching Number

Yi Xu, Yi-Zheng Fan

We establish a tensor spectral stability theorem for uniform hypergraphs with bounded matching number. More precisely, for fixed integers $k \geq 3$ and $β \geq 2$ , and sufficiently l…

math.CO2026

Generalized spectral Turán problems for disjoint cliques

Yi Xu, Yi-Zheng Fan

The generalized Turán number $ex (n, H, F)$ denotes the maximum number of copies of $H$ in an $n$ -vertex $F$ -free graph. Let $k K_{r + 1}$ be the disjoint union of $k$ copies of…

math.CO2017

Spectral conditions of complement for some graphical properties

Guidong Yu, Yi Fang, Yi Xu

L.H. Feng at el \cite{feng4} present sufficient conditions based on spectral radius for a graph with large minimum degree to be $s$ -path-coverable and $s$ -Hamiltonian. Motivated by…