Logarithm laws for horocycle flows and diophantine approximation

Seminar: 
Group Actions and Dynamics
Event time: 
Monday, September 22, 2008 - 12:30pm to 1:30pm
Location: 
431 DL
Speaker: 
Jayadev Athreya
Speaker affiliation: 
Yale
Event description: 

In joint work with G. Margulis, we explore the relationship between cusp excursions for horocycle flow on the (unit tangent bundle of the) modular surface SL(2, R)/SL(2, Z) and diophantine approximation.