Donald Keedwell

News came yesterday that Donald Keedwell has died.

Donald Keedwell was the author (with J. Dénes) of a classic, Latin Squares and their Applications, first published in 1974 with a foreword by Paul Erdős, and still the best source of reference. In my work with Rosemary Bailey, Cheryl Praeger and Csaba Schneider, we used a theorem of Frolov for which the best reference we could find was Dénes and Keedwell. The book is his lasting memorial.

Donald was a stalwart of British combinatorics. He organised the British Combinatorial Committee at the University of Surrey in 1991, and was a member of the committee for some time, holding the office of Secretary (if my memory is correct) for a while.