Robert Rankin: Scottish Link with Ramanujan
The Scottish mathematician Robert Rankin was associated with Ramanujan’s mentor G.H. Hardy. He also handled the manuscripts in the estate of G.N. Watson and had them deposited in the Wren Library at Trinity College, Cambridge University. Ramanujan’s Lost Notebook was among these manuscripts. After describing Rankin’s life, the remarkable story of the discovery of the Lost Notebook is recalled. The article also includes a discussion of Rankin’s work in number theory relating to prime numbers, modular forms and the Ramanujan tau function.