题目： Simple choreographies in the planar Newtonian N-body problem with equal masses
报告人： 余国巍 (巴黎九大/巴黎天文台)
摘要： For the N-body problem with equal masses, there exists a special type of periodic solutions called simple choreographies, where all the masses travel on a single loop. Well known examples including the rotating N-gon, the Figure-Eight solution of three body and the Super-Eight solution of four body. Many simple choreographies with different shapes have been found numerically. However for most of them, rigorous proofs are still unavailable. In this talk, we give a variational proof of a special family of simple choreographies called "linear chain", which looks like a sequence of consecutive bubbles along a given line.
时间： 2017年8月25日（周五）下午 16:10-17:10
邀请人： 程伟 教授