Dwijendra Kumar Ray-Chaudhuri

Dwijendra Kumar Ray-Chaudhuri, born on 1 November 1933, is an Indian-American mathematician and professor emeritus at Ohio State University. He earned an M.Sc. in mathematics at the University of Calcutta in 1956 and a Ph.D. in combinatorics at the University of North Carolina at Chapel Hill in 1959 under R. C. Bose. With his student R. M. Wilson he solved the long-standing Kirkman schoolgirl problem in 1968, a result that contributed to the development of design theory. He is best known for his work in design theory and in the theory of error-correcting codes, where the BCH codes are named partly after him and his advisor Bose. He has been a visiting professor in Gottingen, Erlangen, London and Mumbai, received the Euler Medal of the Institute of Combinatorics and its Applications, was honoured with a festschrift in 2000 and became a fellow of the American Mathematical Society in 2012.