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Renormalization small divisors continued fractions and geodesic flows

seminar: Renormalizations and robust rigidity for critical circle maps

speaker: Konstantin Khanin (Department of Mathematics, University of Toronto)

abstract: In this talk we shall prove that two analytical critical circle maps are C¹-conjugate provided that they have the same irrational rotation number and the same order of their critical points. It is important that C¹-rigidity holds for all irrational rotations. We call this phenomenon robust rigidity.

timetable:
Wed 18 Apr, 10:00 - 11:00, Sala Conferenze Centro De Giorgi
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