### 21 maj, kl 13.15-14.15, Uppsala, sal Å64119.

###
Mark Pollicott (Warwick University):
Computing the Lyapunov exponent for random matrix products

**Abstract.**
Given two square matrices A and B, the Lypanuov exponent
(associated to a Bernoulli measure) is the average growth rate of
n-fold products of these matrices. In the case of positive matrices, we
describe
a method for getting formal expressions for the exponents, which leads to a
useful method of appoximating them numerically.