报告名称:Tight gaps in the cycle spectrum of 3-connected planar graphs
主办单位:威廉希尔
报告专家:崔庆
专家所在单位:南京航空航天大学
报告时间:2021年8月18日12:00
报告地点:腾讯会议(会议ID:477 384 804)
专家简介:崔庆,南开大学博士,美国佐治亚州立大学访问学者。现为南京航空航天大学副教授,硕士生导师。主要研究方向为结构图论,在J. Combin. Theory Ser. B,J. Graph Theory,SIAM J. Discrete Math.,European J. Combin.等期刊发表论文20余篇。主持完成国家自然科学基金青年项目1项。
报告摘要:Merker recently proved that, for any positive integer k, every 3-connected cubic planar graph of circumference at least k has a cycle whose length is in [k,2k+9]. We improve Merker's result to [k,2k+3] and construct an infinite family of 3-connected cubic planar graphs showing that this is best possible. We also prove that the same result holds for all 3-connected planar graphs of circumference at least k, confirming a conjecture of Merker. Joint work with On-Hei Solomon Lo.
邀请人:刘慧清
(审核:郑大彬)