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dc.contributor.authorMassa Esteve, Maria Rosa
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Matemàtiques
dc.identifier.citationMassa, M. The harmonic triangle in Mengoli 's and Leibniz's works. "Quaderns d'història de l'enginyeria", 22 Juny 2018, vol. XVI, p. 233-258.
dc.description.abstractThe harmonic triangle was defined by Gottfried Wilhelm Leibniz (1646- 1716) in 1673, and its definition was related to the successive differences of the harmonic series. Leibniz studied it in many different texts throughout his life. Pietro Mengoli (1627-1686), rather at the same time, used the harmonic triangle as a triangular table to perform quadratures and also the interpola - ted harmonic triangle to calculate the quadrature of the circle. In this article we analyze and compare the independent treatment of harmonic triangle by Mengoli and Leibniz in their works, referring to their sources, their aims, and their uses. We show that, on the one hand, Mengoli uses triangular tables as a tool of calculus, and uses the harmonic triangle to perform quadratures through one procedure called by him “homology”. On the other hand, at the same time, Leibniz defines the harmonic triangle from the study on harmonic series, analyses its properties, and uses it to perform the summations of infi - nite series through one procedure called by him “sums of all the differences”. Harmonic triangle has an open visual structure in which the number of terms arranged in this way can be made infinite. The infinite therefore becomes one more element in the mathematical calculations of these authors, which in seventeenth century mathematics opened up a world of possibilities in the series and in their relations with infinitesimal calculus
dc.format.extent26 p.
dc.publisherPublicacions UPC
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística
dc.subject.lcshMathematics--History--17th century
dc.subject.lcshMengoli, Pietro, 1625-1686
dc.subject.lcshLeibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
dc.subject.otherHarmonic triangle
dc.subject.otherPietro Mengoli
dc.subject.otherGottfried Wilhelm Leibniz
dc.subject.otherSeventeenth century.
dc.titleThe harmonic triangle in Mengoli 's and Leibniz's works
dc.subject.lemacMatemàtica -- Història -- S. XVII
dc.subject.lemacMengoli, Pietro
dc.subject.lemacLeibniz, Gottfried Wilhelm, Freiherr von, 1646-1716
dc.contributor.groupUniversitat Politècnica de Catalunya. GRHCT - Grup de Recerca d'Història de la Ciència i de la Tècnica
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorMassa, M.
upcommons.citation.publicationNameQuaderns d'història de l'enginyeria

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