I am Emeritus Professor in Pure Mathematics in the Faculty of Mathematics, Computing and Technology at the Open University, having retired from the OU in 2009.  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 Emeritus Professor of Geometry at Gresham College in London, giving lectures to the general public - all my lectures there can be watched on the Gresham College website.  I am also a former Fellow in Mathematics at Keble College, Oxford University, and now teach part-time for Pembroke College, Oxford.  Currently I am President of the British Society for the History of Mathematics.

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.  Other recent books have included Mathematics in Victorian Britain (edited with Raymond Flood and Adrian Rice), published by Oxford University Press in 2011, and a coffee-table book, The Great Mathematicians (written with Raymond Flood), Arcturus, 2011.

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 retired from the Open University in September 2009.

Last modified June 2012  © Open University