Complex Rotation Numbers and Renormalization
Adventurous Berkeley Complex Dynamics May 02, 2022 - May 06, 2022
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Primary Mathematics Subject Classification
No Primary AMS MSC
Secondary Mathematics Subject Classification
No Secondary AMS MSC
Complex Rotation Numbers And Renormalization
The complex rotation number (suggested by V.Arnold) is an invariant related to the dynamics of an analytic circle diffeomorphism $f$. Complex rotation numbers give rise to a nice fractal set "bubbles" analogous to classical Arnold's tongues.
I will give a survey on complex rotation numbers and list open problems. Also, I will explain how the renormalization operator makes the "bubbles" self-similar and controls their sizes.
Complex Rotation Numbers and Renormalization
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Complex Rotation Numbers And Renormalization
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