K. G. Ramanathan
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K. G. Ramanathan  

Born 
13 November 1920 Hyderabad, British India 
Died 
10 May 1992 (aged 71) Bombay, India 
Citizenship  Indian 
Alma mater  Princeton University 
Spouse(s)  Jayalakshmi Ramanathan 
Awards  Padma Bhushan 
Scientific career  
Fields  Number theory 
Institutions  TIFR 
Doctoral advisor  Emil Artin 
Doctoral students 
C. P. Ramanujam Kanakanahalli Ramachandra 
Kollagunta Gopalaiyer Ramanathan (13 November 1920 – 10 May 1992) was an Indian mathematician known for his work in number theory. His contributions are also to the general development of mathematical research and teaching in India.
Contents
K. G. Ramanathan's early life and his family
K. G. Ramanathan was born in Hyderabad in South India. He completed his B.A. and M.A. in mathematics at Osmania University and the University of Madras respectively before going to Princeton to earn his Ph.D; his advisor was Emil Artin. At Princeton, Ramanathan also worked with Hermann Weyl and Carl Siegel. Thereafter he returned to India to team up with K. Chandrasekharan at the Tata Institute of Fundamental Research (TIFR) at Colaba in 1951. At Princeton, for about two years, Ramanathan's neighbour was Albert Einstein, legendary physicist. He used to sing Carnatic songs of Thyagaraja to Einstein for entertainment.
Ramanathan was married to Jayalakshmi Ramanathan. He is survived by two sons. His father's name was Kollagunta Gopal Iyer, and his mother's name was Ananthalaxmi. His mother died at an early age. He had two sisters and one brother.^{[citation needed]}
Career
At TIFR, he built up the number theory group of young mathematicians from India. For several years, he took interest to study Ramanujan's unpublished and published work. He was an Editorial board member of Acta Arithmetica for over 30 years. He retired from TIFR in 1985.
Awards
Ramanathan was given numerous achievements during his more than 30 years service at TIFR.
 Padma Bhushan, 1983^{[1]}
 Shanti Swarup Bhatnagar Award, 1965
 Fellow of Indian Academy of Sciences
 Fellow of Indian National Science Academy
 Honorary fellow of TIFR.
Selected publications
 On Ramanujan’s continued fraction, KG Ramanathan  Acta Arith, 1984
 Some applications of Kronecker’s limit formula, KG Ramanathan  J. Indian Math. Soc, 1987
References
 ^ "Padma Awards" (PDF). Ministry of Home Affairs, Government of India. 2015. Archived from the original (PDF) on 15 November 2014. Retrieved 21 July 2015.
External links
 K. G. Ramanathan at the Mathematics Genealogy Project
 Obituary, reproduced from Acta Arithmetica, Author: S. Raghavan
 K. G. R's Photo This is reproduced from Acta Arithmetica 64 (1993) 16
 K. G. Ramanathan's Biography
 Recipients of the Shanti Swarup Bhatnagar Award in Mathematical Science
 1920 births
 1992 deaths
 Recipients of the Padma Bhushan in literature & education
 Indian number theorists
 Presidents of the Indian Mathematical Society
 University of Madras alumni
 Osmania University alumni
 Scientists from Hyderabad, India
 20thcentury Indian mathematicians