Dwijendra Kumar Ray-Chaudhuri (born November 1, 1933) is a

professor emeritus ''Emeritus'' (; female: ''emerita'') is an adjective used to designate a retired chair, professor, pastor, bishop, pope, director, president, prime minister, rabbi, emperor, or other person who has been "permitted to retain as an honorary title ...

Ohio State University The Ohio State University, commonly called Ohio State or OSU, is a public land-grant research university in Columbus, Ohio. A member of the University System of Ohio, it has been ranked by major institutional rankings among the best publ ...

. He and his student

R. M. Wilson Richard Michael Wilson (23 November 1945) is a mathematician and a professor emeritus at the California Institute of Technology. Wilson and his PhD supervisor Dijen K. Ray-Chaudhuri, solved Kirkman's schoolgirl problem in 1968. Wilson is known ...

together solved Kirkman's schoolgirl problem in 1968 which contributed to developments in

design theory Design theory is a subfield of design research concerned with various theoretical approaches towards understanding and delineating design principles, design knowledge, and design practice. History Design theory has been approached and interp ...

. He received his M.Sc. (1956) in mathematics from the famous Rajabazar Science College,

University of Calcutta The University of Calcutta (informally known as Calcutta University; CU) is a Public university, public collegiate university, collegiate State university (India), state university in India, located in Kolkata, West Bengal, India. Considered ...

and Ph.D. in combinatorics (1959) from

University of North Carolina at Chapel Hill A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States ...

. He served as consultant at Cornell Medicine and Sloan Kettering, a professor and chairman of the Department of Mathematics at

, as well as a visiting professor of

University of Göttingen The University of Göttingen, officially the Georg August University of Göttingen, (german: Georg-August-Universität Göttingen, known informally as Georgia Augusta) is a public research university in the city of Göttingen, Germany. Founded ...

and University of Erlangen in

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

University of London The University of London (UoL; abbreviated as Lond or more rarely Londin in post-nominals) is a federal public research university located in London, England, United Kingdom. The university was established by royal charter in 1836 as a degree ...

, and Tata Institute of Fundamental Research in

Mumbai Mumbai (, ; also known as Bombay — the official name until 1995) is the capital city of the Indian state of Maharashtra and the ''de facto'' financial centre of India. According to the United Nations, as of 2018, Mumbai is the second- ...

. He is best known for his work in

and the theory of

error-correcting code In computing, telecommunication, information theory, and coding theory, an error correction code, sometimes error correcting code, (ECC) is used for controlling errors in data over unreliable or noisy communication channels. The central idea is ...

s, in which the class of

BCH code In coding theory, the Bose–Chaudhuri–Hocquenghem codes (BCH codes) form a class of cyclic error-correcting codes that are constructed using polynomials over a finite field (also called ''Galois field''). BCH codes were invented in 1959 ...

s is partly named after him and his Ph.D. advisor

Bose Bose may refer to: * Bose (crater), a lunar crater * ''Bose'' (film), a 2004 Indian Tamil film starring Srikanth and Sneha * Bose (surname), a surname (and list of people with the name) * Bose, Italy, a ''frazioni'' in Magnano, Province of Biella ...

. Ray-Chaudhuri is the recipient of the

Euler Leonhard Euler ( , ; 15 April 170718 September 1783) was a Swiss mathematician, physicist, astronomer, geographer, logician and engineer who founded the studies of graph theory and topology and made pioneering and influential discoveries in ma ...

Medal by the Institute of Combinatorics and its Applications for his career contributions to combinatorics. In 2000, a

festschrift In academia, a ''Festschrift'' (; plural, ''Festschriften'' ) is a book honoring a respected person, especially an academic, and presented during their lifetime. It generally takes the form of an edited volume, containing contributions from the h ...

appeared on the occasion of his 65th birthday. In 2012 he became a fellow of the

American Mathematical Society The American Mathematical Society (AMS) is an association of professional mathematicians dedicated to the interests of mathematical research and scholarship, and serves the national and international community through its publications, meetings, ...

Honors, Awards, and Fellowships

*Senior U.S. Scientist Award of the Humboldt Foundation of Germany *Distinguished Senior Research Award from

*President for Forum in New Delhi *Foundation Fellow of the ICA *Euler Medal of ICA. *Fellow of the

Selected publications

R. C. Bose Raj Chandra Bose (19 June 1901 – 31 October 1987) was an Indian American mathematician and statistician best known for his work in design theory, finite geometry and the theory of error-correcting codes in which the class of BCH codes is p ...

and D. K. Ray-Chaudhuri: On a class of error correcting binary group codes. ''

Information and Control ''Information and Computation'' is a closed-access computer science journal published by Elsevier (formerly Academic Press). The journal was founded in 1957 under its former name ''Information and Control'' and given its current title in 1987. , t ...

'' 3(1): 68-79 (March 1960). * C. T. Abraham, S. P Ghosh and D. K. Ray-Chaudhuri: File organization schemes based on finite geometries. ''

Information and control ''Information and Computation'' is a closed-access computer science journal published by Elsevier (formerly Academic Press). The journal was founded in 1957 under its former name ''Information and Control'' and given its current title in 1987. , t ...

'', 1968. * D. K. Ray-Chaudhuri and R. M. Wilson: Solution of Kirkman's schoolgirl problem. '' Proc. symp. pure Math,'' 1971. * D. K. Ray-Chaudhuri and R. M. Wilson: On t-designs. ''

Osaka Journal of Mathematics is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of 2.7 ...

'' 1975.

References

Indian combinatorialists 20th-century Indian mathematicians Fellows of the American Mathematical Society Indian emigrants to the United States University of Calcutta alumni University of North Carolina at Chapel Hill alumni Ohio State University faculty 20th-century American mathematicians Living people 1933 births {{US-mathematician-stub