Henry John Stephen Smith
name = Henry John Stephen Smith
birth_date = birth date|1826|11|02
death_date = death date and age|1883|02|09|1826|11|02
Oxford, Oxfordshire, England
Henry John Stephen Smith (
November 2 1826 Dublin, Ireland– February 9 1883 Oxford, Oxfordshire, England[GRO Register of Deaths: MAR 1883 3a 511 OXFORD - Henry John S. SMITH, aged 56] ) was a mathematicianremembered for his work in elementary divisors, quadratic forms, and Smith–Minkowski–Siegel mass formulain number theory. In matrix theoryhe is visible today in having his name on the Smith Normal Form of a matrix.
He was born in
Dublin, Ireland, the fourth child of John Smith, a barrister, who died when Henry was two. His mother very soon afterward moved the family to England. He lived in several places in England as a boy, and had private tutors for his education. His mother did not send him to school but educated him herself until age 11, at which point she hired private tutors. At age 15 the boy was admitted to the exclusive Rugby boarding school in Warwickshire. (That was in 1841 when the renowned educationalist Thomas Arnoldwas the school's headmaster). At 19 he won an entrance scholarship to Balliol College, Oxford. He graduated aged 23 in 1849 with high honours in both mathematics and classics. Smith was fluent in French having spent holidays in France, and he took classes in mathematics at the Sorbonne in Paris during the 1846-1847 academic year.
Smith remained at Balliol as a mathematics tutor following his graduation in 1849 and was soon promoted to Fellow status. In 1861 he was promoted to the
Savilian Chair of Geometryat Oxford. In 1873 he was made the beneficiary of a fellowship at Corpus Christi College, Oxford, and gave up teaching at Balliol.
On account of his ability as a man of affairs, Smith was in demand for academic administrative and committee work: He was Keeper of the Oxford University Museum; a Mathematical Examiner for the University of London; a member of a Royal Commission to review scientific education practice; a member of the commission to reform University of Oxford governance; chairman of the committee of scientists overseeing the Meteorological Office; twice president of the London Mathematical Society; etc.
Publications in number theory
"An overview of Smith's mathematics contained in a lengthy obituary published in a professional journal in 1884 is reproduced at NumberTheory.Org [http://www.numbertheory.org/obituaries/OTHERS/smith/page4.html] . The following is an extract from it."
His two earliest mathematical papers were on geometrical subjects, but the third concerned the theory of numbers. Following the example of Gauss, he wrote his first paper on the theory of numbers in Latin: "De compositione numerorum primorum formæ ex duobus quadratis." In it he proves in an original manner the theorem of Fermat---"That every prime number of the form ( being an integer number) is the sum of two square numbers." In his second paper he gives an introduction to the theory of numbers.
In 1858 he was selected by the
British Associationto prepare a report upon the Theory of Numbers. It was prepared in five parts, extending over the years 1859-1865. It is neither a history nor a treatise, but something intermediate. The author analyzes with remarkable clearness and order the works of mathematicians for the preceding century upon the theory of congruences, and upon that of binary quadratic forms. He returns to the original sources, indicates the principle and sketches the course of the demonstrations, and states the result, often adding something of his own.
During the preparation of the Report, and as a logical consequence of the researches connected therewith, Smith published several original contributions to the higher arithmetic. Some were in complete form and appeared in the "Philosophical Transactions" of the Royal Society of London; others were incomplete, giving only the results without the extended demonstrations, and appeared in the Proceedings of that Society. One of the latter, entitled "On the orders and genera of quadratic forms containing more than three indeterminates," enunciates certain general principles by means of which he solves a problem proposed by Eisenstein, namely, the decomposition of integer numbers into the sum of five squares; and further, the analogous problem for seven squares. It was also indicated that the four, six, and eight-square theorems of Jacobi, Eisenstein and Lionville were deducible from the principles set forth.
In 1868 he returned to the geometrical researches which had first occupied his attention. For a memoir on "Certain cubic and biquadratic problems" the Royal Academy of Sciences of Berlin awarded him the Steiner prize.
In February, 1882, he was surprised to see in the "Comptes rendus" that the subject proposed by the Paris Academy of Sciencefor the "Grand prix des sciences mathématiques" was the theory of the decomposition of integer numbers into a sum of five squares; and that the attention of competitors was directed to the results announced without demonstration by Eisenstein, whereas nothing was said about his papers dealing with the same subject in the Proceedings of the Royal Society. He wrote to M. Hermite calling his attention to what he had published; in reply he was assured that the members of the commission did not know of the existence of his papers, and he was advised to complete his demonstrations and submit the memoir according to the rules of the competition. According to the rules each manuscript bears a motto, and the corresponding envelope containing the name of the successful author is opened. There were still three months before the closing of the "concours" (1 June, 1882) and Smith set to work, prepared the memoir and despatched it in time.
Two months after his death the Paris Academy made their award. Two of the three memoirs sent in were judged worthy of the prize. Whenthe envelopes were opened, the authors were found to be Smith and Minkowski, a young mathematician of Koenigsberg, Prussia. No notice was taken of Smith's previous publication on the subject, and M. Hermite on being written to, said that he forgot to bring the matter to the notice of the commission.
* [http://www.archive.org/details/collectedmathema01smituoft Smith's collected mathematical papers. Volume 1. Edited by J.W.L. Glaisher. Published in 1894.] (Digital reproduction of the 1894 book)
* [http://www.archive.org/details/collectedmathema02smituoft Smith's collected mathematical papers. Volume 2. Edited by J.W.L. Glaisher. Published in 1894.] (Digital reproduction of the 1894 book)
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