理学院2019-2020学年秋季第七周学术报告(1)
报告题目:Restricting symmetry (of discrete objects)
报告学者:Marston Conder
报告者单位:奥克兰大学杰出教授,新西兰科学院院士
报告时间:2019年10月22日上午9:00-10:00
报告地点:学生活动中心10层1005
摘要:The symmetry of a discrete structure can easily be altered (or in the case of maps, destroyed) by changing just a small part of it. But there are other contexts where a large degree of symmetry is desirable without achieving the maximum possible symmetry, for example with maps and polytopes that are maximally symmetric by orientation-preserving automorphisms but are chiral (admitting no refections). In a similar vein, sometimes restricting the symmetry can help achieve things that are either impossible or difficult when full symmetry is assumed. I will outline a few recent discoveries that explain and illustrate these phenomena.
主办教师:冯衍全
欢迎广大同学老师积极踊跃参加!