| 词条 | Samarendra Nath Roy |
| 释义 |
|name = S.N. Roy |native_name = সমরেন্দ্রনাথ রায় |image = SamarendraNathRoy.jpg |image_size = 225px |caption = Samarendra Nath Roy |birth_date ={{Birth date|df=yes|1906|12|11}} |birth_place = Calcutta, India |death_date = {{Death date and age|df=yes|1964|07|23|1906|12|11}} |death_place = Jasper, Alberta, Canada |residence = India, US | citizenship = United States |nationality = |alma_mater = Calcutta University |doctoral_advisor = P. C. Mahalanobis N. R. Sen | doctoral_students = Ingram Olkin |known_for = Multivariate analysis |footnotes = |field = Mathematician and Statistician |work_institution = Calcutta University Indian Statistical Institute University of North Carolina, Chapel Hill }} Samarendra Nath Roy or S. N. Roy (11 December 1906 – 23 July 1964) was an Indian-born American mathematician and an applied statistician. Early lifeRoy was the first of three children of Kali Nath Roy and Suniti Bala Roy.[1] His father, Kali Nath Roy was a freedom fighter and the Chief Editor of the newspaper The Tribune, then publishing from Lahore.[2] During the Jallianwala Bagh massacre in April 1919, The Tribune published a news report titled "Prayer at the Jama Masjid", on 6 April 1919. For this "offence" Kali Nath Roy was sentenced to imprisonment of two years along with a fine of one thousand rupees.[3][4][5][6] Roy secured first division in the Matriculation Examination in 1923 from the Khulna District School.[6] He was the topper in the Intermediate Science (Higher Secondary) Examinations in 1925 from the Daulatpur Hindu Academy.[6] He obtained first class and was the topper in both the BSc Mathematics (Honours) from Presidency College of the University of Calcutta in 1928 and the MSc in Applied Mathematics (with the Theory of Relativity as the elective) from the University of Calcutta in 1931.[1][6] Academic careerIn 1931, when Roy joined the Department of Applied Mathematics at the University of Calcutta as a research associate, he used computing facilities at the newly established Indian Statistical Institute,[6] which was founded by Professor P. C. Mahalanobis. Roy along with several talented young scholars including J. M. Sengupta, H. C. Sinha, Raj Chandra Bose, K. R. Nair, K. Kishen and C. R. Rao, joined to form an active group of statisticians under Mahalanobis. Roy was one of the very early students of Mahalanobis, who initiated some of the early works in Statistics.[7] He was well known for his pioneering contribution to multivariate statistical analysis, mainly that of the Jacobians of complicated transformations for various exact distributions, rectangular coordinates and the Bartlett decomposition.[8] His dissertation included the Post master's work at the Indian Statistical Institute where he worked under Mahalanobis.[9] It was Bose who first went to the United States as a visiting professor at Columbia University and then joined the University of North Carolina at Chapel Hill in 1947. Roy followed suit by later joining him at the University of North Carolina at Chapel Hill in the spring of 1950, after initially travelling to the United States to take up a Visiting Professorship of Statistics at Columbia University in New York in the spring of 1949. In between this Roy returned to India and became Head of the Department of Statistics at the University of Calcutta during the academic year 1949–50.[6] Roy joined Bose as full Professor of Statistics in the Statistics Department at the University of North Carolina at Chapel Hill. S. N. Roy had 15 doctorate students there from 1950 till 1963.[10] To commemorate his Birth Centenary an International Conference on "Multivariate Statistical Methods in the 21st Century: The Legacy of Prof. S.N. Roy" was held at Kolkata, India during 28–29 December 2006.[11] The Journal of Statistical Planning and Inference published a special issue for celebrating the Centennial of Birth of S. N. Roy.[7] Personal lifeRoy was married to Bani Roy and had four children, Prabir, Subir, Tapon and Sunanda. He died while on holiday in Jasper, Canada. Selected publications
Selected Ph.D. dissertations under Roy's guidance
Sources:[7][9][13] Recognition
References1. ^1 {{cite journal | doi = 10.1080/00031305.1964.10482640 | last1 = Bose | first1 = R. C. | year = 1964 | title = Samarendra Nath Roy, December 11, 1906-July 23, 1964 | journal = The American Statistician | volume = 18 | issue = 5 | pages = 26–27 | jstor = 2682467}} 2. ^{{cite web | url = http://www.tribuneindia.com/2002/tribune.htm | title = Tribuneindia...119 Years of Trust | publisher = The Tribune | accessdate = 21 January 2013}} 3. ^{{cite news | author1 = Varinder Walia | author2 = Neeraj Bagga | title = Jallianwala Bagh revisited | url = http://www.tribuneindia.com/2006/20060413/aplus.htm | accessdate = 21 January 2013 | newspaper = The Tribune | date = 13 April 2006}} 4. ^{{cite news | author = Gobind Thukral | title = EDITORIAL PAGE; LOOKING BACK; How 1919 Punjab rebellion was suppressed|url = http://www.tribuneindia.com/2001/20010725/edit.htm|accessdate = 5 August 2013 | newspaper = The Tribune}} 5. ^{{cite web | author = Viscount Cave, J. | url = http://indiankanoon.org/doc/50741/ | title = Kali Nath Roy vs The King-Emperor on 9 December, 1920 | publisher = Indian Kanoon – Search engine for Indian Law | accessdate = 24 July 2013}} 6. ^1 2 3 4 5 {{cite web | url = http://www-history.mcs.st-andrews.ac.uk/Biographies/Roy.html | author1 = J J O'Connor | author2 = E F Robertson | authorlink2 = Edmund F. Robertson | title = Roy Biography | publisher = MacTutor History of Mathematics archive | accessdate = 21 January 2013}} 7. ^1 2 {{cite journal | title = Life and legacy of Samarendra Nath Roy 1906–1964 | journal = Journal of Statistical Planning and Inference | volume = 137 | issue = 11 | pages = 3208–3212 | author1 = Govind S. Mudholkar | author2 = Alan D. Hutsonb | author3 = Michael P. McDermotta | doi = 10.1016/j.jspi.2007.03.003 | year = 2007 }} 8. ^{{cite web | last=V. Mardia | first = Kanti | title = On S.N. Roy's Legacy to Multivariate Analysis | format = PDF | url = http://www.maths.leeds.ac.uk/statistics/research/reports/2007/STAT07-07.pdf | work = Presented as a plenary talk to S. N. Roy Multivariate Conference, Kolkata (December 2006) | accessdate= 26 October 2012 | date = 23 January 2008}} 9. ^1 {{MathGenealogy|id=29412}} 10. ^{{cite web | url = http://www.stat.unc.edu/phds.html#1950 | title = PhDs Awarded | publisher = Department of Statistics and Operations Research, University of North Carolina at Chapel Hill | accessdate = 21 January 2013}} 11. ^{{cite web | title = Multivariate Statistical Methods in the 21st Century: The Legacy of Prof. S.N. Roy | url = http://www.isical.ac.in/~multstatconf/ | year = 2006 | publisher = Indian Statistical Institute | accessdate = 18 February 2013}} 12. ^{{ cite journal | journal = Current Science | volume = 87 | issue = 3 | year = 2004 | page = 395 | url = http://www.iisc.ernet.in/currsci/aug102004/395.pdf | first = P | last = Bhimasankaram | title = Sujit Kumar Mitra (1932–2004)}} 13. ^{{cite web | publisher = The Department of Statistics and Operations Research at UNC | title = PhDs awarded | url = http://www.stat.unc.edu/phds.html }} External links
12 : 1906 births|1964 deaths|Indian statisticians|Bengali mathematicians|Bengali people|20th-century Indian mathematicians|University of Calcutta faculty|University of North Carolina at Chapel Hill faculty|Scientists from Kolkata|University of Calcutta alumni|Indian Statistical Institute faculty|Binghamton University faculty |
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