Subbayya Sivasankaranarayana Pillai was an Nagercoil native Indian mathematician specialising in number theory. His contribution to Waring’s problem was described in 1950 by K. S. Chandrasekharan as “almost certainly his best piece of work and one of the very best achievements in Indian Mathematics since Ramanujan”.
Fields
- Mathematics
Known for
- Pillai’s conjecture
- Pillai’s arithmetical function
- Pillai prime
Contributions
He proved the Waring’s problem for K ? 6 in 1935 under the further condition of (3k +1)/ (2k – 1) ? [1.5k] + 1 head of Leonard Eugene Dickson who around the same time proved it for K ? 7.
He showed that g(k) = 2k + l -2 where l is the largest natural number ? (3/2)k and hence computed the precise value of g(6) = 73.
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