Dwijendra Kumar Ray-Chaudhuri (Born November 1, 1933) a Bengali

Bengali people

The Bengali people are an ethnic community native to the historic region of Bengal in South Asia. They speak Bengali , which is an Indo-Aryan language of the eastern Indian subcontinent, evolved from the Magadhi Prakrit and Sanskrit languages. In their native language, they are referred to as বাঙালী...

 India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n born mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 and a statistician

Statistician

A statistician is someone who works with theoretical or applied statistics. The profession exists in both the private and public sectors. The core of that work is to measure, interpret, and describe the world and human activity patterns within it...

 is a professor emeritus
at Ohio State University

Ohio State University

The Ohio State University, commonly referred to as Ohio State, is a public research university located in Columbus, Ohio. It was originally founded in 1870 as a land-grant university and is currently the third largest university campus in the United States...

. He and his student R. M. Wilson

R. M. Wilson

Richard Michael Wilson is a mathematician and a professor at the California Institute of Technology. Wilson and D. K. Ray-Chaudhuri, , solved Kirkman's schoolgirl problem in 1968. Wilson is known for his work in combinatorial mathematics.-References:*...

 together solved Kirkman's schoolgirl problem

Kirkman's schoolgirl problem

Kirkman's schoolgirl problem is a problem in combinatorics proposed by Thomas Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary...

 in 1968.

He is best known for his work in design theory

Combinatorial design

Combinatorial design theory is the part of combinatorial mathematics that deals with the existence and construction of systems of finite sets whose intersections have specified numerical properties....

 and the theory of error-correcting codes, in which the class of BCH code

BCH code

In coding theory the BCH codes form a class of parameterised error-correcting codes which have been the subject of much academic attention in the last fifty years. BCH codes were invented in 1959 by Hocquenghem, and independently in 1960 by Bose and Ray-Chaudhuri...

s is partly named after him and his Ph.D. advisor Bose. Ray-Chaudhuri is the recipient of the Euler Medal by the Institute of Combinatorics and its Applications

Institute of Combinatorics and its Applications

The Institute of Combinatorics and its Applications is an international scientific organization. It was formed in 1990 and is based in Winnipeg, Canada.-Aim and membership:...

 for his career contributions to combinatorics. In 2000, a festschrift

Festschrift

In academia, a Festschrift , is a book honoring a respected person, especially an academic, and presented during his or her lifetime. The term, borrowed from German, could be translated as celebration publication or celebratory writing...

 appeared on the occasion of his 65th birthday.

Dwijendra Kumar was born in Narayangang village in Bengal

Bengal

Bengal is a historical and geographical region in the northeast region of the Indian Subcontinent at the apex of the Bay of Bengal. Today, it is mainly divided between the sovereign land of People's Republic of Bangladesh and the Indian state of West Bengal, although some regions of the previous...

 of the British India. He received his M.Sc. (1956) in mathematics from the University of Calcutta

University of Calcutta

The University of Calcutta is a public university located in the city of Kolkata , India, founded on 24 January 1857...

 and Ph.D. in combinatorics (1959) from University of North Carolina, Chapel Hill. He is married to Joyasree Ray-Chaudhuri. They have three children.

Selected Publications

• R. C. Bose, D. K. Ray-Chaudhuri: On A Class of Error Correcting Binary Group Codes. Information and Control 3(1): 68-79, March 1960