جيمس جوسف سيلڤستر

جيمس جوسف سيلڤستر
James Joseph Sylvester
وُلِدَ	James Joseph (1814-09-03)3 سبتمبر 1814 لندن، إنجلترة
توفي	15 مارس 1897(1897-03-15) (aged 82) لندن، إنجلترة
المثوى	Balls Pond Road Cemetery
المدرسة الأم	جامعة كمبردج
اللقب	Coining the terms 'graph' and 'discriminant' Chebyshev–Sylvester constant Quadruplanar inversor Sylvester's sequence Sylvester's formula Sylvester's determinant theorem Sylvester matrix Sylvester–Gallai theorem Sylvester's law of inertia Sylvester's triangle problem Sylver coinage Sylvester's criterion Sylvester domain
الجوائز	Royal Medal (1861) Copley Medal (1880) De Morgan Medal (1887)
السيرة العلمية
المجالات	الرياضيات
الهيئات	جامعة جونز هوپكنز University College London University of Virginia Royal Military Academy, Woolwich جامعة أكسفورد
المشرفون الأكاديميون	John Hymers Augustus De Morgan
طلاب الدكتوراه	William Durfee George B. Halsted Washington Irving Stringham
طلاب بارزون آخرون	Isaac Todhunter William Roberts McDaniel Harry Fielding Reid Christine Ladd-Franklin

جيمس جوسف سيلڤستر FRS HonFRSE (3 سبتمبر 1814 - 15 مارس 1897) كان عالم رياضيات إنگليزي. وقد قام بإسهامات أساسية في matrix theory, invariant theory, number theory, partition theory, and combinatorics. وقد لعب دوراً قيادياً في النصف الثاني من القرن التاسع عشر كأستاذ في جامعة جونز هوپكنز وكمؤسس لـ American Journal of Mathematics. عند وفاته، كان أستاذاً في جامعة أكسفورد.

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 السيرة

James Joseph was born in London on 3 September 1814, the son of Abraham Joseph, a Jewish merchant. James later adopted the surname Sylvester when his older brother did so upon emigration to the United States.

At the age of 14, Sylvester was a student of Augustus De Morgan at the University of London. His family withdrew him from the University after he was accused of stabbing a fellow student with a knife. Subsequently, he attended the Liverpool Royal Institution.

Sylvester began his study of mathematics at St John's College, Cambridge in 1831, where his tutor was John Hymers. Although his studies were interrupted for almost two years due to a prolonged illness, he nevertheless ranked second in Cambridge's famous mathematical examination, the tripos, for which he sat in 1837. However, Sylvester was not issued a degree, because graduates at that time were required to state their acceptance of the Thirty-nine Articles of the Church of England, and Sylvester could not do so because he was Jewish. For the same reason, he was unable to compete for a Fellowship or obtain a Smith's prize. In 1838, Sylvester became professor of natural philosophy at University College London and in 1839 a Fellow of the Royal Society of London. In 1841, he was awarded a BA and an MA by Trinity College Dublin. In the same year he moved to the United States to become a professor of mathematics at the University of Virginia, but left after less than four months. A student who had been reading a newspaper in one of Sylvester's lectures insulted him and Sylvester struck him with a sword stick. The student collapsed in shock and Sylvester believed (wrongly) that he had killed him. Sylvester resigned when he felt that the university authorities had not sufficiently disciplined the student. He moved to New York City and began friendships with the Harvard mathematician Benjamin Peirce (father of Charles Sanders Peirce) and the Princeton physicist Joseph Henry. However, he left in November 1843 after being denied appointment as Professor of Mathematics at Columbia College (now University), again for his Judaism, and returned to England.

On his return to England, he was hired in 1844 by the Equity and Law Life Assurance Society for which he developed successful actuarial models and served as de facto CEO, a position that required a law degree. As a result, he studied for the Bar, meeting a fellow British mathematician studying law, Arthur Cayley, with whom he made significant contributions to invariant theory and also matrix theory during a long collaboration. He did not obtain a position teaching university mathematics until 1855, when he was appointed professor of mathematics at the Royal Military Academy, Woolwich, from which he retired in 1869, because the compulsory retirement age was 55. The Woolwich academy initially refused to pay Sylvester his full pension, and only relented after a prolonged public controversy, during which Sylvester took his case to the letters page of The Times.

One of Sylvester's lifelong passions was for poetry; he read and translated works from the original French, German, Italian, Latin and Greek, and many of his mathematical papers contain illustrative quotes from classical poetry. Following his early retirement, Sylvester published a book entitled The Laws of Verse in which he attempted to codify a set of laws for prosody in poetry.

In 1872, he finally received his B.A. and M.A. from Cambridge, having been denied the degrees due to his being a Jew.

In 1876 Sylvester again crossed the Atlantic Ocean to become the inaugural professor of mathematics at the new Johns Hopkins University in Baltimore, Maryland. His salary was $5,000 (quite generous for the time), which he demanded be paid in gold. After negotiation, agreement was reached on a salary that was not paid in gold.

In 1877, he was elected as a member to the American Philosophical Society.

In 1878 he founded the American Journal of Mathematics. The only other mathematical journal in the US at that time was the Analyst, which eventually became the Annals of Mathematics.

In 1883, he returned to England to take up the Savilian Professor of Geometry at Oxford University. He held this chair until his death, although in 1892 the University appointed a deputy professor to the same chair. He was on the governing body of Abingdon School.

Sylvester died at 5 Hertford Street, London on 15 March 1897. He is buried in Balls Pond Road Cemetery on Kingsbury Road in London.

 الذكرى

Sylvester invented a great number of mathematical terms such as "matrix" (in 1850), "graph" (in the sense of network) and "discriminant". He coined the term "totient" for Euler's totient function φ(n). In discrete geometry he is remembered for Sylvester's problem and a result on the orchard problem, and in matrix theory he discovered Sylvester's determinant identity, which generalizes the Desnanot–Jacobi identity. His collected scientific work fills four volumes. In 1880, the Royal Society of London awarded Sylvester the Copley Medal, its highest award for scientific achievement; in 1901, it instituted the Sylvester Medal in his memory, to encourage mathematical research after his death in Oxford.

Sylvester House, a portion of an undergraduate dormitory at Johns Hopkins University, is named in his honor. Several professorships there are named in his honor also.

 المنشورات

• Sylvester, James Joseph (1870). The Laws of Verse, or, Principles of Versification Exemplified in Metrical Translations: Together with an Annotated Reprint of the Inaugural Presidential Address to the Mathematical and Physical Section of the British Association at Exeter. London: Longmans, Green and Co. ISBN 978-1-177-91141-2.
• Sylvester, James Joseph (1973) [1904]. Baker, Henry Frederick (ed.). The Collected Mathematical Papers of James Joseph Sylvester. Vol. I. New York: AMS Chelsea Publishing. ISBN 978-0-8218-3654-5.
• Sylvester, James Joseph (1973) [1908]. Baker, Henry Frederick (ed.). The Collected Mathematical Papers of James Joseph Sylvester. Vol. II. New York: AMS Chelsea Publishing. ISBN 978-0-8218-4719-0.
• Sylvester, James Joseph (1973) [1904]. Baker, Henry Frederick (ed.). The Collected Mathematical Papers of James Joseph Sylvester. Vol. III. New York: AMS Chelsea Publishing. ISBN 978-0-8218-4720-6.
• Sylvester, James Joseph (1973) [1904]. Baker, Henry Frederick (ed.). The Collected Mathematical Papers of James Joseph Sylvester. Vol. IV. New York: AMS Chelsea Publishing. ISBN 978-0-8218-4238-6.

 انظر أيضاً

• Catalecticant
• Covariance and contravariance of vectors
• Evectant
• Inclusion–exclusion principle
• Invariant of a binary form
• Sylvester's construction
• Sylvester pentahedron
• Sylvester's problem
• Clock and shift matrices
• Umbral calculus
• List of things named after James Joseph Sylvester

 المصادر

• Grattan-Guinness, I. (2001), "The contributions of J. J. Sylvester, F.R.S., to mechanics and mathematical physics", Notes and Records of the Royal Society of London 55 (2): 253–265, doi:10.1098/rsnr.2001.0142 .
• Macfarlane, Alexander (2009), Lectures on Ten British Mathematicians of the Nineteenth Century, Mathematical monographs, 17, Cornell University Library, ISBN 978-1-112-28306-2, https://archive.org/details/lecturesontenbri00macf 
• Parshall, Karen Hunger (1998), James Joseph Sylvester. Life and work in letters., The Clarendon Press Oxford University Press, Review, ISBN 978-0-19-850391-0, https://books.google.com/books?id=Ovp18JU_qhoC 
• Parshall, Karen Hunger (2006), James Joseph Sylvester. Jewish mathematician in a Victorian world, Johns Hopkins University Press, ISBN 978-0-8018-8291-3, https://books.google.com/books?isbn=0801882915 

 وصلات خارجية

• O'Connor, John J.; Robertson, Edmund F., "جيمس جوسف سيلڤستر", MacTutor History of Mathematics archive 
• جيمس جوسف سيلڤستر at the Mathematics Genealogy Project
• Collected papers – from the University of Michigan Historical Math Collection
• J. J. Sylvester home page
• Selected Poetry of James Joseph Sylvester
• Works by جيمس جوسف سيلڤستر at LibriVox (public domain audiobooks)