Patrick Moss 25/10/1947--17/3/2024

Patrick Moss (1947–2024) had two distinct lives as a mathematician. The first was as a ring theorist in the late 1970s, in which he worked with Ginn and Lenagan as a student. After a long career as an inspirational mathematics teacher, Patrick completed a doctorate under my supervision in 2003. This led to a second mathematical life in arithmetic dynamics almost forty years after his first period of research. This is a short obituary of his remarkable contributions, several of which have stimulated further research.