University of Surrey
Who I am:
I am currently a Senior Lecturer in the mathematics department
of the University of Surrey, where I have been working since January 2012. I previously held postdoctoral positions at
the University of Rome Tor Vergata, at the University of Warwick, at
the University of Manchester, and at the Erwin Schrödinger Institute in
Vienna. Prior to all that I studied at Warwick for my undergraduate
degree, and received my PhD in 2006 from the University of Manchester
where I was supervised by Dr. Charles Walkden.
In general I am interested in applications of ergodic theory and
dynamical systems to other areas of mathematical analysis. I have previously worked on topics including symbolic dynamics, thermodynamic formalism, optimization problems in ergodic theory and applications of ergodic theory to combinatorics, but in recent years my research has been particularly dominated by connections between multiplicative ergodic theory and matrix analysis. My principal current focus is on applications of those two topics to the dimension theory of self-affine fractals.
My Erdős number is 3, by three routes: Morris → Hare → Shallit → Erdős; Morris → Lee → Vaughan → Erdős; and Morris → Jenkinson → Mauldin → Erdős.
Who I am not:
More people share my name than you might expect:
Ian Matthew Morris is Professor of Classics and History at Stanford University and, among other things, wrote the popular history book ``Why the West Rules -- For Now'' which I quite enjoyed reading. Occasionally people email me to ask questions about it. Ian also writes articles for Stratfor.
Ian David Morris is a (former?) professor at Hull-York Medical School, where I understand that he specialises in the study of DNA damage. At one point he and I were simultaneously based at the University of Manchester, where I occasionally received his mail.
Ian David Morris is a Marie Curie Fellow at the Spanish National Research Council (CSIC) where he studies early Islamic history.
Ian D. Morris is a rabbi at Sinai Synagogue, a Reform synagogue in Leeds. I believe that he is the author of a dissertation on the use of humour in Midrash Rabbah, the authorship of which has occasionally been attributed to me by automated search engines despite the fact that at the time he wrote it, I was five years old. At some point I will probably attempt to read it.
Ifor Morris is the author of several publications dealing with graph theory and related matters. He was at one point based at Bangor University in Wales, but appears to currently not maintain a website.
Isla Morris is a research governance officer at the University of Sussex, where she also studies digital and online research ethics.
July 2014 - June 2016: Principal Investigator for EPSRC First Grant EP/L026953/1, "Distributional analysis of GCD algorithms via the ergodic theory of random dynamical systems", £91,795.
February 2017 - January 2021: Principal Investigator for Leverhulme Trust Research Project Grant RPG-2016-194 "Lower bounds for Lyapunov exponents", £267,776.
My earlier preprint `Dominated splittings for semi-invertible operator cocycles on Hilbert space' (arXiv 1403.0824) contained a critical error and I encourage researchers not to cite it.
At the time of writing my publications are as follows:
Fast approximation of the p-radius, matrix pressure or generalised Lyapunov exponent for positive and dominated matrices.