https://indianpedia.org/index.php?action=history&feed=atom&title=Cadambathur_Tiruvenkatacharlu_RajagopalCadambathur Tiruvenkatacharlu Rajagopal - Revision history2026-08-01T00:59:53ZRevision history for this page on the wikiMediaWiki 1.45.4https://indianpedia.org/index.php?title=Cadambathur_Tiruvenkatacharlu_Rajagopal&diff=176921&oldid=previmported>Rgdboer at 05:12, 17 September 20202020-09-17T05:12:27Z<p></p>
<p><b>New page</b></p><div>{{short description|Indian mathematician}}<br />
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{{Use Indian English|date=August 2018}}<br />
'''Cadambur Tiruvenkatachari Rajagopal''' (8 September 1903 &ndash; 25 April 1978) was an [[India]]n [[mathematician]].<br />
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==Biography==<br />
Rajagopal was born in [[Triplicane]], [[Madras]], [[British Raj|India]]. He was the first son of Tiruvenkatachari and Padmammal. He had two younger brothers, [[C.T. Venugopal]], a distinguished civil servant, and [[C. T. K. Chari]]. They also had a young sister, Kamala. He studied at [[Presidency College, Chennai|Presidency College]] and graduated with an Honours in mathematics in 1925. He was involved in the clerical service and then taught mathematics at [[Annamalai University]]. Rajagopal taught mathematics at [[Madras Christian College]] from 1931 to 1951. He joined the [[Ramanujan Institute for Advanced Study in Mathematics]] in 1951.{{fact|date=August 2018}}<br />
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Collaborating on the teaching of [[conic section]]s, Rajagopal and Vaniyambadi Rajagopala Srinivasaraghavan wrote a [[textbook]], ''An Introduction to Analyical Conics'', that was published in 1955 by [[Oxford University Press]] in India. A reviewer noted "a pleasing feature is the frequent reference to the history of the subject", and "the authors pursue the theory in great detail, proving a large number of subsidiary results."<ref>E.J.F. Primrose (1957) "Review: ''An introduction to analytical conics'' by Rajagopal & Srinivasaraghvan", [[The Mathematical Gazette]] 41 {{doi|10.2307/3610142}}</ref><br />
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Rajagopal became Director of the [[Ramanujan Institute for Advanced Study in Mathematics]] in 1955.<ref>{{cite web|url=http://www.imsc.res.in/~rao/ramanujan/newnow/riasm.htm|title=RIASM History}}</ref><ref>{{cite journal|url=http://ddd.uab.cat/pub/fsunyercor/fsunyercor_556.pdf|title=Letter from C.T.Rajagopal as Head of RIASM}}</ref> He helped the Institute to become India's leading mathematics research centre. The Institute<ref>{{cite web|title=RIASM merges with UM|url=http://www.chennaibest.com/cityresources/education/institutes1.asp#raman}}</ref> is now associated with the [[University of Madras]], after it was merged with the Department of Mathematics at the University in 1967.{{fact|date=August 2018}}<br />
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Rajagopal conducted research on sequences, series, summability, and published more than 80 papers but is most noted for his work in the area of generalising and unifying [[Abelian and tauberian theorems|Tauberian theorems]]. He also did research in many other mathematical topics.{{fact|date=August 2018}}<br />
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Rajagopal also conducted research in the history of medieval Indian mathematics. He showed that the series for arctan x discovered by [[James Gregory (mathematician)|James Gregory]] and those for sin x and cos x discovered by [[Isaac Newton]] were known to the Hindu mathematicians 150 years earlier. He identified [[Madhava of Sangamagrama|Madhava]] as the first discoverer of these series.{{fact|date=August 2018}}<br />
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==Works==<br />
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* 1949: (with M.S. Rangachari) "A Neglected Chapter of Hindu Mathematics", [[Scripta Mathematica]] 15: 201–9<br />
* 1951: (with M.S. Rangachari) "On the Hindu proof of Gregory's series", ''Scripta Mathematica'' 17: 65–74.<br />
* 1949: (with A. Venkataraman) "The sine and cosine power series in Hindu mathematics", ''Journal of the Royal Asiatic Society of Bengal (Science)'' 15: 1–13.<br />
* 1955: (with V. R. Srinivasaraghavan) [https://books.google.com/books?id=t38HGQAACAAJ&dq=inauthor:%22C.+T.+Rajagopal%22&hl=en&sa=X&ei=7FbCT92rLIH89gSv9KjHCw&ved=0CDQQ6AEwAA Introduction to Analytical Conics] via [[Google Books]]<br />
* 1977/8: (with M. S. Rangachari) "An Untapped Source of Medieval Keralese Mathematics", ''Archive for History of Exact Sciences'' 18(2): 89–102.<br />
* 1986: (with M.S Rangachari) "On Medieval Kerala Mathematics" [[Archive for History of Exact Sciences]] 35: 91–99 {{doi|10.1007/BF00357622}}<br />
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==See also==<br />
* [[K. Ananda Rau]]<br />
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==References==<br />
{{reflist}}<br />
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== External links ==<br />
* {{MacTutor Biography|id=Rajagopal}}<br />
* [https://www.jstor.org/action/doBasicSearch?filter=&Query=c.t.rajagopal&wc=on&Search.x=0&Search.y=0 Published papers archived on JSTOR]<br />
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{{DEFAULTSORT:Rajagopal, Cadambur Tiruvenkatachari}}<br />
[[Category:1903 births]]<br />
[[Category:1978 deaths]]<br />
[[Category:20th-century Indian mathematicians]]<br />
[[Category:Scientists from Chennai]]</div>imported>Rgdboer