Birthday conferences

The impending removal of my university web pages has led me to put here the slides of some talks.

I have been extremely fortunate in having wonderful colleagues who have organised three birthday conferences for me. (Well, one was actually a retirement conference, but I retired at 65, so I am including it.) So here are the talks I gave at each of these conferences. They contain some errors, and some conjectures which turned out to be false, but I think they have some interest.

• From Higman–Sims to Urysohn, Ambleside, August 2007
• Primitivity, London, July 2013
• Perchance to dream, Lisbon, July 2017

Enjoy!