Background
Gilles Personne de Roberval was born on August 10, 1602 at Roberval, near Beauvais, France. His name was originally Gilles Personne, that of Roberval, by which he is known, being taken from the place of his birth.
(Hard to find book)
Hard to find book
http://www.amazon.com/gp/product/2711612597/?tag=2022091-20
(Traite de mechanique des poids soustenus par des puissanc...)
Traite de mechanique des poids soustenus par des puissances sur les plans inclinez a l'horizon . Des puissances qui soustiennent un poids suspendu a deux chordes, par G. Pers. de Roberval, ... Date de l'edition originale: 1636 Sujet de l'ouvrage: Poids (physique) -- Ouvrages avant 1800 Ce livre est la reproduction fidele d'une oeuvre publiee avant 1920 et fait partie d'une collection de livres reimprimes a la demande editee par Hachette Livre, dans le cadre d'un partenariat avec la Bibliotheque nationale de France, offrant l'opportunite d'acceder a des ouvrages anciens et souvent rares issus des fonds patrimoniaux de la BnF. Les oeuvres faisant partie de cette collection ont ete numerisees par la BnF et sont presentes sur Gallica, sa bibliotheque numerique. En entreprenant de redonner vie a ces ouvrages au travers d'une collection de livres reimprimes a la demande, nous leur donnons la possibilite de rencontrer un public elargi et participons a la transmission de connaissances et de savoirs parfois difficilement accessibles. Nous avons cherche a concilier la reproduction fidele d'un livre ancien a partir de sa version numerisee avec le souci d'un confort de lecture optimal. Nous esperons que les ouvrages de cette nouvelle collection vous apporteront entiere satisfaction. Pour plus d'informations, rendez-vous sur www.hachettebnf.fr
http://www.amazon.com/gp/product/2016162597/?tag=2022091-20
(Divers ouvrages de M. de Roberval / publ. par l'Académie ...)
Divers ouvrages de M. de Roberval / publ. par l'Académie royale des sciences Date de l'édition originale: 1693 Sujet de l'ouvrage: Roberval, Gilles Personne de (1602-1675) -- Contribution aux mathématiques -- Ouvrages avant 1800Roberval, Gilles Personne de (1602-1675) -- Contribution à la physique -- Ouvrages avant 1800 Le présent ouvrage s'inscrit dans une politique de conservation patrimoniale des ouvrages de la littérature Française mise en place avec la BNF. HACHETTE LIVRE et la BNF proposent ainsi un catalogue de titres indisponibles, la BNF ayant numérisé ces oeuvres et HACHETTE LIVRE les imprimant à la demande. Certains de ces ouvrages reflètent des courants de pensée caractéristiques de leur époque, mais qui seraient aujourd'hui jugés condamnables. Ils n'en appartiennent pas moins à l'histoire des idées en France et sont susceptibles de présenter un intérèt scientifique ou historique. Le sens de notre démarche éditoriale consiste ainsi à permettre l'accès à ces oeuvres sans pour autant que nous en cautionnions en aucune façon le contenu. Pour plus d'informations, rendez-vous sur www.hachettebnf.fr
http://www.amazon.com/gp/product/2012540503/?tag=2022091-20
Gilles Personne de Roberval was born on August 10, 1602 at Roberval, near Beauvais, France. His name was originally Gilles Personne, that of Roberval, by which he is known, being taken from the place of his birth.
Like Rene Descartes, he was present at the siege of La Rochelle in 1627. In the same year he went to Paris, where he was appointed to the chair of philosophy in the Gervais College in 1631, and two years later to the chair of mathematics in the Royal College of France. A condition of tenure attached to this chair was that the holder should propose mathematical questions for solution, and should resign in favour of any person who solved them better than himself; but, notwithstanding this, Roberval was able to keep the chair till his death, which occurred at Paris on the 27th of October 1675. Roberval was one of those mathematicians who, just before the invention of the infinitesimal calculus, occupied their attention with problems which are only soluble, or can be most easily solved, by some method involving limits or infinitesimals, and in the solution of which accordingly the calculus is always now employed. Thus he devoted some attention to the quadrature of surfaces and the cubature of solids, which he accomplished, in some of the simpler cases, by an original method which he called the "Method of Indivisibles"; but he lost much of the credit of the discovery as he kept his method for his own use, while Bonaventura Cavalieri published a similar method which he himself had invented. Another of Roberval's discoveries was a very general method of drawing tangents, by considering a curve as described by a moving point whose motion is the resultant of several simpler motions. He also discovered a method of deriving one curve from another, by means of which finite areas can be obtained equal to the areas between certain curves and their asymptotes. To these curves, which were also applied to effect some quadratures, Evangelista Torricelli gave the name of " Robervallian lines. " Between Roberval and Descartes there existed a feeling of ill-will, owing to the jealousy aroused in the mind of the former by the criticism which Descartes offered to some of the methods employed by him and by Pierre de Fermat; and this led him to criticize and oppose the analytical methods which Descartes introduced into geometry about this time. As results of Roberval's labours outside the department of pure mathematics may be noted a work on the system of the universe, in which he supports the Copernican system and attributes a mutual attraction to all particles of matter.
(Traite de mechanique des poids soustenus par des puissanc...)
(Divers ouvrages de M. de Roberval / publ. par l'Académie ...)
(Hard to find book)
He was a member of the French Academy of Sciences.
