Date: Monday, December 11, 2017
Location: 3096 East Hall (4:00 PM to 5:00 PM)
Title: Iteration at the boundary of Newton's method
Abstract: Geometric invariant theory gives natural compactifications for the moduli spaces of rational maps. But the iteration maps on these moduli spaces can not extend to the boundary. This is related to the existence of rescaling limits. I will discuss the iteration maps on the moduli spaces of Newton maps and give a complete description of the rescaling limits in this case. Moreover, if we mark the fixed points, we get DeligneMumford compactifications of these moduli spaces. I will give a relationship between the DM compactification and the GIT compactification.
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Speaker: Hongming Nie
Institution: Indiana University
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