李德明,博士 ,副教授,硕导 .研究方向:图论(组合数学),组合最优化. 职 称:副教授,硕导学 位:博士毕业院校: 北京交通大学研究方向:图论(组合数学),组合最优化.职 称:副教授,硕导学 位:博士毕业院校: 北京交通大学研究方向:图论(组合数学),组合最优化29. Incidence colorings of powers of circuits,28. Hajos' conjecture and cycle power graphs,26. List extremal number of union of short cycles,27. Incidence coloring of the squares of some graphs,25. 直径为三的不可上嵌入的图,24. Hadwiger's conjecture for powers of cycles and their complements,23. On the decay number of a graph,22. The Genus distributions of Mobius ladders21. 由轮图导出的某些平面图的星色数20. The star chromatic numbers of some planar graphs derived from wheels