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HENRY JOHN STEPHEN SMITH (1826-1883)

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Originally appearing in Volume V25, Page 264 of the 1911 Encyclopedia Britannica.
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HENRY See also:JOHN See also:STEPHEN See also:SMITH (1826-1883)  , See also:English mathematician, was See also:born in See also:Dublin on the 2nd of See also:November 1826, and was the See also:fourth See also:child of his parents . When See also:Henry See also:Smith was just two years old his See also:father died, whereupon his See also:mother See also:left See also:Ireland for See also:England . After being privately educated by his mother and tutors, he entered See also:Rugby school in 1841 . Whilst under the first of these tutors, in nine months he read all See also:Thucydides, See also:Sophocles and See also:Sallust, twelve books of See also:Tacitus, the greater See also:part of See also:Horace, See also:Juvenal, See also:Persius, and several plays of See also:Aeschylus and See also:Euripides . He also studied the first six books of See also:Euclid and some See also:algebra, besides See also:reading a considerable quantity of See also:Hebrew and learning the Odes of Horace by See also:heart, On the See also:death of his See also:elder See also:brother in See also:September 1843 Henry Smith left Rugby, and at the end of 1844 gained a scholarship at Balliol See also:College, See also:Oxford . He won the Ireland scholarship in 1848 and obtained a first class in both the classical and the mathematical See also:schools in 1849 . He gained the See also:senior mathematical scholarship in 1851 . He was elected See also:fellow of Balliol in 1850 and Savilian See also:professor of See also:geometry in 1861, and in 1874 was appointed keeper of the university museum . He was elected F.R.S. in 1861, and was an LL.D. of See also:Cambridge and Dublin . He served on various royal commissions, and from 1877 was the chairman of the managing See also:body of the meteorological See also:office . He died at Oxford on the 9th of See also:February 1883 . After taking his degree he wavered between See also:classics and See also:mathematics, but finally See also:chose the latter .

After See also:

publishing a few See also:short papers See also:relating to theory of See also:numbers and to geometry, he devoted himself to a thorough examination of the writings of K . F . See also:Gauss, P . G . See also:Lejeune-Dirichlet, E . E . Kummer, &c., on, the theory of numbers . The See also:main results of these researches, which occupied him from 1854 to 1864, are contained in his See also:Report on the Theory of Numbers, which appeared in the See also:British Association volumes from 1859 to 1865 . This report contains not only a See also:complete See also:account of all that had been done on this vast and intricate subject but also See also:original contributions of his own . Some of the most important results of his discoveries were communicated to the Royal Society in two See also:memoirs upon " Systems of Linear Indeterminate Equations and Congruences" and upon the " Orders and Genera of Ternary Quadratic Forms " (Phil . Trans., 1861 and 1867): He did not, however, confine himself to the See also:consideration of forms involving only three indeterminates, but succeeded in establishing the principles on which the See also:extension to the See also:general See also:case of n indeterminates depends, and obtained the general formulae, thus effecting what is probably the greatest advance made in the subject since the publication of Gauss's Disquisitiones arithmeticae . A brief abstract of Smith's methods and results appeared in the Proc .

See also:

Roy . See also:Soc. for 1864 and 1868 . In the second of these notices he gives the general formulae without demonstrations . As corollaries to the general formulae he adds the formulae relating to the See also:representation of a number as a sum of five squares and also of seven squares . This class of representation ceases when the number of squares exceeds eight . The cases of two, four and six squares had been given by K . G . J . See also:Jacobi and that of three squares by F . G . Eisenstein, who had also given without demonstration some of the results for five squares . Fourteen years later the See also:Academic Fran9aise, in See also:ignorance of Smith's See also:work, set the demonstration and completion of Eisenstein's theorems for five squares as the :abject of their " See also:Grand Prix See also:des Sciences Mathematiques." Smith, 3t' the See also:request of a member of the See also:commission by which the See also:prize was proposed, undertook in 1882 to write out the demonstration of his general theorems so far as was required to prove the results for the See also:special case of five squares .

Phoenix-squares

A See also:

month after his death, in See also:March 1883, the prize of 3000 francs was awarded to him . The fact that a question of which Smith had given the See also:solution in 1867, as a corollary from general formulae governing the whole class of investigations to which it belonged, should have been set by the Academie as the subject of their See also:great prize shows how far in advance of his contemporaries his See also:early researches had carried him . Many of the propositions contained in his dissertation are general; but the demonstrations are not supplied for the case of seven squares . He was also the author of important papers in which he extended to complex quadratic forms, many of Gauss's investigations relating to real quadratic forms . After '864 he devoted himself chiefly to elliptic functions, and numerous papers on this subject were published by him in the Proc . Lond . Math . Soc. and elsewhere . At the See also:time of his death he was engaged upon a memoir on the Theta and Omega Functions,, which he left nearly complete . In 1868 he was awarded the See also:Steiner prize of the See also:Berlin See also:Academy for a geometrical memoir, Sur quelques problemes cubiques et biquadratiques . He also wrote the introduction to the collected edition of See also:Clifford's Mathematical Papers (1882) . The three subjects to which Smith's writings relate are theory of numbers, elliptic functions and See also:modern geometry; but in all that he wrote an " arithmetical " mode of thought is apparent, his methods and processes being arithmetical as distinguished from algebraic., He had the most intense admiration of Gauss .

He was See also:

president of the mathematical and See also:physical See also:section of the British Association at See also:Bradford in 1873 and of the See also:London Mathematical Society in 1874-1876 . His Collected Papers were edited by J . W . L . See also:Glaisher and published in 1894 . An See also:article in the Spectator of the 17th of February 1883, by See also:Lord See also:Justice See also:Bowen, gives perhaps the best See also:idea of Smith's extraordinary See also:personal qualities and See also:influence . See also J . W . L . Glaisher's memoir in the Monthly Notices of the Roy . See also:Ast . Soc .

(vol. xliv., 1884) .

End of Article: HENRY JOHN STEPHEN SMITH (1826-1883)
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