牛兆宏，博士，副教授，硕士生导师，主要研究方向为图论中的超欧拉问题和哈密尔顿问题。
近年来，先后主持国家自然科学基金青年基金项目1项，数学天元基金项目1项；在Discrete Math.、Discrete Appl. Math.、Appl. Math. J. Chinese Univ.等国际国内重要学术刊物发表学术论文10余篇；入选2018年度山西省“三晋英才”青年优秀人才支持计划，获山西大学“三育人”先进个人称号。
[1] Zhaohong Niu,Liming Xiong.Supereulerianity of k-edge-connected graphs with a restriction on small bonds. Discrete Applied Mathematics,2010,158(1),37-43.
[2] Zhaohong Niu,Hong-Jian Lai,Liming Xiong.Spanning subgraph with Eulerian components.Discrete Mathematics, 2012,312(5),1013-1018.
[3] Zhaohong Niu,Liming Xiong,Shumin Zhang.Smallest 2-edge-connected graphs without a spanning trail.Utilitas Mathematica,2012,88(3),381-397.
[4] Zhaohong Niu,Liang Sun,Liming Xiong,Hong-Jian Lai,Huiya Yan.On extremal k-supereulerian graphs.Discrete Mathematics,2014,314,50-60.
[5] Zhaohong Niu,Liming Xiong.Smallest k-edge-connected claw-free graphs without special spanning trails.Utilitas Mathematica,2014,93,233-248.
[6] Zhaohong Niu,Liming Xiong.On traceable line graphs.Graphs and Combinatorics,2015,31(1),221-233.
[7] Zhaohong Niu,Liming Xiong,Weihua Yang.On traceable iterated line graph and hamiltonian path index, Applied Mathematics. Series B, A Journal of Chinese Universities,2024, 39(2),239-252.
[8] Ruijuan Li,Yaoxiang Di,Ruiping Zhang,Zhaohong Niu. Hamiltonian cycles avoiding prescribed arcs in semicomplete digraphs.Discrete Applied Mathematics, 2025,360,451-458.
[1] 超欧拉图相关问题及方法研究.国家自然科学基金青年基金项目,2016.01-2018.12,主持；
[2] 图的超欧拉性质和生成偶子图的分支数研究.国家自然科学基金数学天元基金，2014.01-2014.12，主持。
