Tarim University

output

20112024

most citedLi-rich and super Li-rich giants produced by element diffusion

12 citations

Showing 2018 · math.COShow all

3 papers · 2 filters

math.CO2018

A generalization of Noel-Reed-Wu Theorem to signed graphs

Wei Wang, Jianguo Qian

Let $Σ$ be a signed graph where two edges joining the same pair of vertices with opposite signs are allowed. The zero-free chromatic number $χ^{*} (Σ)$ of $Σ$ is the minimum even inte…

math.CO2018

Chromatic-choosability of hypergraphs with high chromatic number

Wei Wang, Jianguo Qian

It was conjectured by Ohba and confirmed recently by Noel et al. that, for any graph $G$ , if $∣ V (G) ∣ \leq 2 χ (G) + 1$ then $χ_{l} (G) = χ (G)$ . This indicates that the graphs with high chroma…

math.CO2018

Colorings v.s. list colorings of uniform hypergraphs

Wei Wang, Jianguo Qian, Zhidan Yan

Let $r$ be an integer with $r \geq 2$ and $G$ be a connected $r$ -uniform hypergraph with $m$ edges. By refining the broken cycle theorem for hypergraphs, we show that if $k>\frac{m-1…