Raj Chandra Bose

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Raj Chandra Bose ( Bengali : রাজ চন্দ্র বসু , Rāj Candra Basu ; born June 19, 1901 in Hoshangabad , Madhya Pradesh ; † October 31, 1987 in Colorado ) was an Indian mathematician and statistician. He became known, among other things, for his work in the field of coding theory ( BCH code ).

Life

Raj Chandra Bose was born in Hoshangabad, India, the first of five siblings. His father, a doctor, had high hopes for his eldest son and expected very good results in school. After his parents died prematurely, responsibility for his younger siblings weighed on him at the age of 19. Despite these difficult circumstances, he graduated from the University of Calcutta in 1927 with a successful MA in mathematics.

In December 1932, Prasanta Chandra Mahalanobis , director of the newly founded Indian Statistical Institute , became aware of the young Bose and brought him to his institute. Bose acquired a fundamental knowledge of statistics here.

In 1940 he moved to the University of Calcutta , where he became head of the statistics department in 1945. At the urging of his superiors, Bose received his PhD here.

In 1947, Bose traveled to the United States. He was visiting professor at Columbia University and the University of North Carolina at Chapel Hill and received many offers during this time. In view of the increasing administrative burden in his home country, he finally emigrated in March 1949 and took up a position as professor of statistics at the University of North Carolina at Chapel Hill .

This is where Bose made his most famous discoveries. Together with his student SS Shrikhande (head of the mathematics faculty at the University of Bombay in the 1960s) he refuted Euler's conjecture that there are no orthogonal Latin squares of the order 4 k + 2. They even showed that there are an infinite number of such Latin squares. Together with DK Ray-Chaudhuri and A. Hocquenghem, he discovered a new method for forward error correction in transmission technology, the BCH code named after its discoverers .

In 1976 he received one of the highest American awards for scientists and was made a Fellow of the American National Academy of Sciences . In 1950 he was invited speaker at the International Congress of Mathematicians (ICM) in Cambridge (Massachusetts) (Mathematical theory of factorial designs).

Bose died in Colorado in 1987 at the age of 86.

Works

  • On the construction of balanced incomplete block designs, Annals of Eugenics. 9: 358-399 (1939).
  • Zs. With KR Nair: Partially balanced incomplete block designs, Sankhya 4 (1939), 337-372.
  • Zs. With RK Ray-Chaudhuri: On a class of error-correcting binary codes, Information and control, 3, (1960), 68-79.
  • Zs. With SS Shrikhande: On the falsity of Euler's conjecture about the non-existence of two orthogonal Latin squares of order 4t + 2, Proceedings of the National Academy of Science USA, 45, (1959), 734-737.

Individual evidence

  1. ^ Bose, Shrikhande On the falsity of Euler's conjecture about the non-existence of two orthogonal latin squares of order 4t + 2 , Proc. Nat. Acad. Sci. USA, Vol. 45, 1959, pp. 734-737
  2. ^ Bose, Shrikhande On the construction of sets of mutually orthogonal latin squares and the falsity of a conjecture of Euler , Transactions AMS, Volume 95, 1960, pp. 191-209, Online

Web links

personal data
SURNAME Bose, Raj Chandra
ALTERNATIVE NAMES Basu, Rāj Candra (IAST)
BRIEF DESCRIPTION Indian mathematician and statistician
DATE OF BIRTH June 19, 1901
PLACE OF BIRTH Hoshangabad , Madhya Pradesh
DATE OF DEATH October 31, 1987
Place of death Colorado