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Jean Paul de Gua de Malves

Jean Paul de Gua de Malves (1713, Malves-en-Minervois (Aude) – June 2, 1785, Paris[1]) was a French mathematician who published in 1740 a work on analytical geometry in which he applied it, without the aid of differential calculus, to find the tangents, asymptotes, and various singular points of an algebraic curve.

Usages de l'analyse de Descartes, 1740

He further showed how singular points and isolated loops were affected by conical projection. He gave the proof of Descartes's rule of signs which is to be found in most modern works. It is not clear whether Descartes ever proved it strictly, and Newton seems to have regarded it as obvious.

De Gua de Malves was acquainted with many of the French philosophes during the last decades of the Ancien Régime. He was an early, short-lived, participant, then editor (later replaced by Diderot) of the project that ended up as the Encyclopédie. Condorcet claimed that it was in fact the de Gua who recruited Diderot to the project, though this claim has never been verified. In either case, Jean-Paul and Jean le Rond d'Alembert, also thought to have been recruited by the de Gua, first show up on the December 1746 payroll of the publishers who were backing the Encyclopédie project. Diderot was added just weeks later and took over as editor on 16 October 1747. At the funeral of the "profound geometrician", as Diderot called him, the eulogy was given by Condorcet.

He was elected a Fellow of the Royal Society in 1743.[2]

See also Edit

References Edit

  1. ^ Open Site - Science: Mathematics: Mathematicians: Gua de Malves, Jean
  2. ^ "Library and Archive Catalogue". Royal society. Retrieved 2012-03-04.[permanent dead link]

Bibliography Edit

  • Arthur M. Wilson: Diderot. Oxford University Press, New York, 1972, pp. 79–81.
  • Nicolas de Condorcet, « Éloge de M. l’abbé de Gua », Œuvres de Condorcet, Firmin Didot frères, 1847-1849, Paris, p. 241-58. (online copy)
  • Rene Taton: Gua De Malves, Jean Paul De. Complete Dictionary of Scientific Biography, 2008.
An original entry was based on the book A Short Account of the History of Mathematics (4th edition, 1908) by W. W. Rouse Ball.

jean, paul, malves, 1713, malves, minervois, aude, june, 1785, paris, french, mathematician, published, 1740, work, analytical, geometry, which, applied, without, differential, calculus, find, tangents, asymptotes, various, singular, points, algebraic, curve, . Jean Paul de Gua de Malves 1713 Malves en Minervois Aude June 2 1785 Paris 1 was a French mathematician who published in 1740 a work on analytical geometry in which he applied it without the aid of differential calculus to find the tangents asymptotes and various singular points of an algebraic curve Usages de l analyse de Descartes 1740He further showed how singular points and isolated loops were affected by conical projection He gave the proof of Descartes s rule of signs which is to be found in most modern works It is not clear whether Descartes ever proved it strictly and Newton seems to have regarded it as obvious De Gua de Malves was acquainted with many of the French philosophes during the last decades of the Ancien Regime He was an early short lived participant then editor later replaced by Diderot of the project that ended up as the Encyclopedie Condorcet claimed that it was in fact the de Gua who recruited Diderot to the project though this claim has never been verified In either case Jean Paul and Jean le Rond d Alembert also thought to have been recruited by the de Gua first show up on the December 1746 payroll of the publishers who were backing the Encyclopedie project Diderot was added just weeks later and took over as editor on 16 October 1747 At the funeral of the profound geometrician as Diderot called him the eulogy was given by Condorcet He was elected a Fellow of the Royal Society in 1743 2 See also EditDe Gua s theoremReferences Edit Open Site Science Mathematics Mathematicians Gua de Malves Jean Library and Archive Catalogue Royal society Retrieved 2012 03 04 permanent dead link Bibliography EditArthur M Wilson Diderot Oxford University Press New York 1972 pp 79 81 Nicolas de Condorcet Eloge de M l abbe de Gua Œuvres de Condorcet Firmin Didot freres 1847 1849 Paris p 241 58 online copy Rene Taton Gua De Malves Jean Paul De Complete Dictionary of Scientific Biography 2008 An original entry was based on the book A Short Account of the History of Mathematics 4th edition 1908 by W W Rouse Ball Retrieved from https en wikipedia org w index php title Jean Paul de Gua de Malves amp oldid 1115042066, wikipedia, wiki, book, books, library,

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