报告人：崔贵珍 研究员（中国科学院数学与系统科学研究院）
时间： 4月4日 上午9:00-10:00
地点： 中山北路校区理科A楼1510室
报告题目：Foldings of polynomials
摘要： We study post-critically finite branched coverings
such that they have a non-peripheral Jordan curve whose pre-image
contains at least two Jordan curves and each of them is homotopic to
itself rel the post-critical set. We give conditions under which
they have no Thurston obstruction. In particular we construct
hyperbolic rational maps whose Julia sets are Sierpinski carpet. We
also provide an example for the above branched coverings with a
Thurston obstruction.