I am a Professor in Pure Mathematics here in the Faculty of Mathematics, Computing and Technology at the Open University. My main areas of interest are the History of Mathematics (British history from 1600, especially the period 1840-1940 and the history of Gresham College, and the history of graph theory and combinatorics) and Graph Theory (graph colourings, especially edge-colourings).

In addition to my Open University commitments, I am also a Fellow in Mathematics at Keble College, Oxford University, and until recently was Professor of Geometry at Gresham College in London.

Here are some of my 

If you would like a look at my career history, here is a brief CV.

My recent book Lewis Carroll in Numberland was published by Allen Lane (Penguin) in July 2008.  It has appeared in paperback and in Japanese and Spanish editions.

I gave my inaugural lecture as Professor of Pure Mathematics at the Open University in July 2008.  The title was Communicating Mathematics: a historical and personal approach.

I retire from the Open University at the end of September 2009.

Last modified January 2008  © Open University