# Kristian Bjerklöv: Resonance problems in Dynamical Systems

**Time: **
Wed 2019-11-20 14.30 - 15.00

**Lecturer: **
Kristian Bjerklöv, KTH

**Location: ** KTH, D2

Keeping track of recurrences to "bad regions" is a major difficulty in the theory of dynamical systems. By considering an explicit model I will illustrate how this difficulty naturally arises. In the setting of this model, the problem is to estimate the norm of (arbitrarily large) products of *SL*(2,*R*)-matrices, where many of the matrices are "good" and some of them could be "bad".

(Inaugural lecture for newly appointed professor.)