Ian Morris is visiting the Department of Mathematics at ETH in Zürich Switzerland this week (w/c 4th March). The visit involves research interaction with Çağrı Sert. While there, he is giving a talk in the joint ETH/University of Zürich Seminar on Ergodic Theory and Dynamical Systems. The title of his talk is “Computability of some matrix growth invariants arising in fractal geometry“. A link to the seminar page with the abstract and other details is here.