Dynamical Systems Seminar

Title: Kneading sequences for double standard maps
Speaker: Professor Ana Rodrigues
Speaker Info: IUPUI
Brief Description:
Special Note:

Recently, in joint work with M. Misiurewicz we

investigated the family of double standard maps of the circle

onto itself, given by

f_{a,b}(x) = 2x + a + \frac{b}{\pi}\sin(2\pi x) (mod 1).

Similarly to the family of Arnold standard maps of the


A_{a,b}(x)=x+a+\frac{b}{2\pi}\sin(2\pi x) (mod 1),

if 0 < b \le 1 then any such map has at most one attracting periodic

orbit. The values of the parameters for which such an orbit exists are

grouped into Arnold tongues. These results lead to an

introductory study of the symbolic dynamics for the double standard

family in joint work with M. Benedicks.

Date: Tuesday, March 03, 2009
Time: 3:00pm
Where: Lunt 105
Contact Person: Prof. Bryna Kra
Contact email: kra@math.northwestern.edu
Contact Phone: 847-491-5567
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