C. P. Ramanujam

Chidambaram Padmanabhan Ramanujam, usually cited CP Ramanujam, ( born January 9, 1938 in Madras, † October 27, 1974 in Bangalore ) was an Indian mathematician who dealt with algebraic geometry and number theory.

R. Narasimhan described him as one of the strongest mathematical talents that produced India in the second half of the 20th century, equally at home in classical mathematical analysis as well as in abstract algebraic geometry of the School of Alexander Grothendieck, analytical and algebraic number theory.

Ramanujam studied at Loyola College in Madras, where the mathematics and Jesuit C. Racine promoted him. In 1957 he was admitted to the Tata Institute of Fundamental Research. His fellow students were then Raghavan Narasimhan, with whom he was friends and had visited the school, and S. Ramanan. There he heard, among others, the lectures of Max Deuring on algebraic function fields, which he developed. It was created in 1967 received his doctorate in KG Ramanathan in number theory. Previously, he had a problem solved by Carl Ludwig Siegel ( one of the examiners for his thesis ), in which he showed that cubic forms in 54 variables over any algebraic number field have at least one non-trivial solution. He also made ​​progress in connection with the Waringproblem over algebraic number fields. Due to these achievements, he was Associate Professor at the Tata Institute before his promotion. He also worked as lecture notes for the lectures by Igor Shafarevich ( Algebraic surfaces ) in 1965 and David Mumford ( abelian varieties ) 1967 at the Tata Institute of, where he also improved the evidence.

He was invited to Harvard Mumford and Grothendieck to Paris and was also briefly in Paris. In 1964, when he was diagnosed with schizophrenia. He went back to Madras and left in 1965, Tata Institute to become a professor in Chandigarh, but then returned back to the Tata Institute. As a result, outbreaks of the disease alternated with phases of mathematical activity. For example, he was invited by Mumford as a visiting professor for a year at the University of Warwick, as there Algebraic Geometry ran courses, and was a visiting professor in Turin. He proved in 1972 a variant of the Verschwindungssatzes Kunihiko Kodaira by specifying conditions for the vanishing of the first cohomology groups of coherent sheaves on surfaces, and the topological invariance of Milnor numbers. At the Tata Institute they tried to keep him and went on his own request at the Department of Applied Mathematics, Bangalore. In 1974, he took with sleeping pills during one of his periods of depression life.

He was a Fellow of the Indian Academy of Sciences (1973).