Louis Joel Mordell's time in London

The celebrated number theorist Louis Joel Mordell spent around two and a half decades working in Manchester and for most of the rest of his career he was based in St John's College, Cambridge. There was, however, a brief period when he was based in London. The standard biographies of Mordell's life by and largely tend to overlook this period almost to the point of being deceptive about it. In this paper we will address this imbalance by discussing this chapter in Mordell's life in more detail.