Dijen K. Ray-Chaudhuri

Dijen Kumar Ray - Chaudhuri, actually Dwijendra Ray - Chaudhuri, ( born November 1, 1933, Narayanganj, British India) is an Indian- American mathematician who deals with combinatorics.

Life

Ray - Chaudhuri studied at the University of Calcutta ( master's degree in 1956 ) and at the University of North Carolina at Chapel Hill, where he received his doctorate at Raj Chandra Bose, 1959 ( "On the Application of the Geometry of Quadrics to the Construction of Partially Balanced incomplete block designs and Error Correcting Binary codes "). 1956/7 and 1961/2 he was a researcher at the Indian Statistical Institute in Calcutta. In 1960 he became an Assistant Professor at the University of North Carolina. In 1960, he was at Bell Laboratories and 1961 at the Rand Corporation. 1962 to 1965 he was with IBM at the Thomas J. Watson Research Center. 1965/6 he was Visiting Associate Professor at the University of Wisconsin and from 1966 professor at the Ohio State University, where he was from 1979 to 1982 and from 1990 to 1994 chairman of the mathematics department. He was a visiting professor in Göttingen, Erlangen, London and at the Tata Institute of Fundamental Research. Ray - Chaudhuri has U.S. citizenship.

Ray - Chaudhuri developed with RC Bose named after them and A. Hocquenghem BCH codes. In 1968 he broke with his student Richard M. Wilson the general case of the " school girl problem " by Thomas Kirkman Penyngton from the year 1850.

He was invited speaker at the International Congress of Mathematicians 1970 in Nice ( " On some recent developments in the theory of combinatorial designs" ). He is an honorary member of the Hungarian Academy of Sciences and a Fellow of the American Mathematical Society. He was awarded the Euler Medal.

Among his doctoral next to Richard M. Wilson ( 1969) Jeff Kahn and Akos Seress.