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Mathematics Colloquium

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Date:  Tuesday, January 20, 2009

Title:  Polynomial mappings

Abstract:  I will present properties of polynomials mappings and generalizations. I will first describe all polynomials f and g for which there is a complex number c such that the orbits {c, f(c), f(f(c)), ...} and {c, g(c), g(g(c)), ...} have infinite intersection. I will also discuss a common generalization of this result and Mordell's conjecture (Faltings' theorem). After this I will move to polynomial mappings over finite fields, with connections to curves having large automorphism groups and instances of a positive characteristic analogue of Riemann's existence theorem.


Speaker:  Michael Zieve
Institution:  IAS, Princeton

 

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