Tirukkannapuram Vijayaraghavan, Date of Birth, Date of Death
TweetTirukkannapuram Vijayaraghavan
Indian mathematician
Date of Birth: 
About Tirukkannapuram Vijayaraghavan
- Tirukkannapuram Vijayaraghavan (Tamil: ??????????????? ??????????; 30 November 1902 – 20 April 1955) was an Indian mathematician from the Madras region.
- He worked with G.
- H.
- Hardy when he went to Oxford in mid-1920s on Pisot–Vijayaraghavan numbers.
- He was a fellow of Indian Academy of Sciences elected in the year 1934. Vijayaraghavan was well versed in Sanskrit and Tamil.
- He was a close friend of André Weil.
- He served with him in Aligarh Muslim University.
- He later moved to the University of Dhaka in protest at Weil's firing from AMU.Vijayaraghavan proved a special case of Herschfeld's theorem on nested radicals: For a n > 0 {\displaystyle a_{n}>0} a 1 + a 2 + a 3 + a 4 + ? {\displaystyle {\sqrt {a_{1}+{\sqrt {a_{2}+{\sqrt {a_{3}+{\sqrt {a_{4}+\cdots }}}}}}}}} converges if and only if lim ¯ ( log ? a n ) / 2 n < + 8 , {\displaystyle {\overline {\lim }}(\log a_{n})/2^{n}<+\infty ,} where lim ¯ {\displaystyle {\overline {\lim }}} denotes the limit superior.
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