IPM

                                پژوهشگاه دانش‌های بنیادی
پژوهشکدهٔ ریاضیات


Mathematics Colloquium سمینار عمومی ریاضیات




TITLE  
Ziggurats and Rotation Numbers


SPEAKER  
Danny Calegari  
University of Chicago  
 


TIME  
Wednesday, June 20, 2018,   16:00 - 17:00


VENUE   Lecture Hall 1, Niavaran Bldg.



SUMMARY

 

The dynamical study of homeomorphisms of the circle is more than a century old; for a single homeomorphism Poincare found a beautiful invariant - the rotation number. In this talk we address the following fundamental question: if we know the rotation numbers of two homeomorphisms of the circle, what can we say about the rotation number of their product?

 




تهران، ضلع‌ جنوبی ميدان شهيد باهنر (نياوران)، پژوهشگاه دانش‌های بنيادی، پژوهشکده رياضيات
School of Mathematics, Institute for Research in Fundamental Sciences (IPM), Niavaran Bldg., Niavaran Square, Tehran
ipmmath@ipm.ir   ♦   +98 21 22290928   ♦  math.ipm.ir