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K. G. Ramanathan | |
|---|---|
| Born | 13 November 1920 |
| Died | 10 May 1992 (aged 71) Bombay, India |
| Citizenship | Indian |
| Alma mater | Princeton University |
| Occupation | Mathematician |
| Spouse | 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 Indianmathematician known for his work innumber theory. His contributions are also to the general development of mathematical research,[1] and teaching in India.
K. G. Ramanathan was born inHyderabad, South India, on 13 November 1920[2] to Sri Kollagunta Gopal Iyer and Smt. Anantalakshmi, and was one of three children in the family.[3]
Ramanathan received his early education from Wesleyan Mission High School inSecunderabad. He further pursued his academic interests in mathematics and obtained a BA degree from Nizam College, Hyderabad, in 1940. Later, in 1942, he completed his master's degree in mathematics fromLoyola College inChennai (then known as Madras). Sources state that Ramanathan's academic journey was also influenced by mathematics teacher andJesuit priest, Rev Fr. C Racine, who was a former student of the renowned French mathematicianE Cartan.[3]
With a keen passion for teaching and research in mathematics, Ramanathan worked as an assistant lecturer atAnnamalai University in Chidambaram,Tamil Nadu from 1945 to 1946. He then joinedOsmania University, Hyderabad as a lecturer for the following two years. In 1948, he became a research scholar at theUniversity of Madras, where he had the opportunity to work alongside esteemed mathematicians including Professors R Vaidhyanathaswamy and T Vijayraghavan. In the same year, Ramanathan received an invitation to attend the Institute for Advanced Study (IAS) atPrinceton. Whilst there, Ramanathan worked alongsideHermann Weyl andCarl Siegel,[4] and is said to have sung Carnatic songs ofTyagaraja to the legendary physicistAlbert Einstein, who was Ramanathan's neighbour at the university. Until 1951, along withEmil Artin, Siegel supervised Ramanathan in his PhD studies in mathematics.[3]
Following the successful completion of his PhD, Ramanathan returned to India to team up withK. S. Chandrasekharan at theTata Institute of Fundamental Research (TIFR) atColaba in 1951.[5]
Ramanathan was married to Jayalakshmi Ramanathan. He had two sons. His mother died at an early age.
At TIFR, he built up the number theory group of young mathematicians from India. For several years, he took interest to studyRamanujan's unpublished and published work. He was an editorial board member ofActa Arithmetica for over 30 years. He retired from TIFR in 1985.
Ramanathan was given numerous achievements during his more than 30 years service at TIFR.