时间：12月7日（周三）10：00-11：30
地点：3号楼3楼会议室
主讲人：Kening Lu教授，Brigham Young University
题目：On the dynamics of quasi-periodically perturbed homoclinic solutions
摘要：We study the complicated dynamics of quasi-periodically perturbed ordinary differential equations with a homoclinic orbit to a dissipative saddle point. We show that there are four regions of parameters in which the equations have respectively: (1) attracting quasi-periodic integral manifolds of Levinson type; (2) transition to chaos; (3) strange attractors; (4) homoclinic tangles. In the case of homoclinic tangles, we not only obtain the results on horseshoes similar to the existing ones, but also give a comprehensive geometric description of the structures of tangles.