Circle patterns with obtuse exterior intersection angles

讲座时间 Datetime: 

星期五, 2019/03/15 - 从 16:00 到 17:30

地点 Venue: 

海滨红楼6号楼1楼会议室

报告人 Speaker: 

周泽 副教授

单位 Affiliation: 

湖南大学

报告摘要 Abstract: 

Koebe-Andreev-Thurston theorem studies the existence and rigidity of circle patterns of a given combinatorial type and the given non-obtuse exterior intersection angles. By using topological degree theory and variational principle, in this talk we will derive 
a series of results generalizing Koebe-Andreev-Thurston theorem to the case of obtuse exterior intersection angles.