Author

Ming-Yang Guo

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Preprint Oct 2026

Ore-degree conditions for hypergraph matchings

Let $\sigma_k(H)$ be the minimum sum of the vertex degrees over all non-edges of an $n$-vertex $k$-uniform hypergraph $H$. For every $k\ge3$, $n\geq ks$ and sufficiently large $n$, we establish a sharp Ore-type degree condition that forces a matching of size $s$ in $H$. Specifically, we prove that if \[ \sigma_k(H)>\ma...

Ming-Yang Guo, Tian-Hong Kan, Hong-Liang Lu et al. · 0 citations

Preprint Sep 2026

High-Temperature ferromagnetism from site-selective filling in (Fe,Ni)$_{6-\delta}$GeTe$_2$

The discovery of high-temperature ferromagnetism in the metallic van der Waals (vdW) system Fe$_N$GeTe$_2$ has brought two-dimensional (2D) magnets into technologically relevant temperature scales. Specifically at N = 5, dilution of magnetic moments by nickel substitution counterintuitively achieves a record high Curie...

T. Werner, Jonathan T. Reichanadter, Xiang Chen et al. · 0 citations