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Giovanni Enrico Eugenio Vacca (18 November 1872 – 6 January 1953) was an Italian mathematician, Sinologist and historian of science. Vacca studied mathematics and graduated from the University of Genoa in 1897 under the guidance of G. B. Negri. He was a politically active student and was banished for that from Genoa in 1897. He moved to Turin and became an assistant to Giuseppe Peano. In 1899 he studied, at Hanover, unpublished manuscripts of Gottfried Wilhelm Leibniz, which he published in 1903. Around 1898 Vacca became interested in Chinese language and culture after attending a Chinese exhibition in Turin. He took private lessons of Chinese and continued to study it at the University of Florence. Vacca then traveled to China in 1907–8. Originally he had planned to study the history of C

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  • Giovanni Vacca (Gènova, 18 de novembre de 1872 - Roma, 6 de gener de 1953) va ser un matemàtic, historiador de la ciència i sinòleg italià. (ca)
  • Giovanni Enrico Eugenio Vacca (* 18. November 1872 in Genua; † 6. Januar 1953 in Rom) war ein italienischer Mathematiker. Er studierte in Genua Mathematik und promovierte 1897 bei . Im November 1897 wurde er Assistent bei Giuseppe Peano, den er beim Verfassen seiner Formulario unterstützte. Er beschäftigte sich auch mit Geschichte der Mathematik und Naturwissenschaften. 1899 studierte er in Hannover die unpublizierten Manuskripte von Gottfried Wilhelm Leibniz, die er 1903 teilweise veröffentlichte. Ein wesentlicher Beitrag Vaccas bestand darin, dass er 1910 und 1926 nach Euler einen zweiten Typ einer Reihenentwicklung (die nach ihm benannte Vacca-Reihe) mit rationalen Gliedern für die Eulersche Konstante angegeben hat: Er bemerkte dazu: There is some hope that this series can be of some use in the proof of the irrationality of , a very difficult problem, proposed, but not resolved, in the Correspondence, recently published, between Hermite und Stieltjes. Weiter hat er 1910 eine komplexe Iteration für die Kreiszahl publiziert: mit . Sie ist jedoch wegen der notwendigen Langzahlarithmetik nicht gut zur numerischen Berechnung von geeignet, weil die Effizienz gegenüber den bekannten deutlich schlechter ist. Mit jedem Iterationsschritt wird nur etwa eine halbe Dezimalstelle gewonnen. Es ist . (de)
  • Giovanni Enrico Eugenio Vacca (18 November 1872 – 6 January 1953) was an Italian mathematician, Sinologist and historian of science. Vacca studied mathematics and graduated from the University of Genoa in 1897 under the guidance of G. B. Negri. He was a politically active student and was banished for that from Genoa in 1897. He moved to Turin and became an assistant to Giuseppe Peano. In 1899 he studied, at Hanover, unpublished manuscripts of Gottfried Wilhelm Leibniz, which he published in 1903. Around 1898 Vacca became interested in Chinese language and culture after attending a Chinese exhibition in Turin. He took private lessons of Chinese and continued to study it at the University of Florence. Vacca then traveled to China in 1907–8. Originally he had planned to study the history of Chinese mathematics and ancient and modern science in more detail, but he returned to Europe without truly linking his mathematical interests with the study of Chinese civilization. He pursued the latter professionally, first, as a lecturer of Chinese language and literature at the Istituto di studi superiori di Firenze in 1910, then, in charge of teaching language and literature of the Far East at the University of Rome from 1911 until 1921, transferred to Florence in succession of Carlo Puini as ordinario for History and Geography of East Asia, and finally at the University of Rome, where he held the chair for History and Geography of East Asia from 1923 to his retirement in 1948 when he was in his 76th year. Besides actively contributing to the field of East Asian Studies, Vacca continued in parallel to work on mathematical questions inspired by his intellectual proximity to Peano’s School and his extensive readings of historical sources by Euclid, Archimedes, Euler, Fermat, Napier, and others. The interests of Vacca were almost equally split between mathematics, Sinology and history of science, with a corresponding number of papers being 38, 47 and 45. In 1910, Vacca developed a complex number iteration for pi: The calculation efficiency of these formulas is significantly worse than of the modern Borwein's algorithm – they converge by only about half a decimal point with each iteration. Vacca published his two major contributions to mathematics in 1910 and 1926, on series expansion (later named Vacca series) of the Euler constant. They are, respectively Vacca noted in 1910 that: There is some hope that this series can be of some use in the proof of the irrationality of , a very difficult problem, proposed, but not resolved, in the Correspondence, recently published, between Hermite und Stieltjes. (en)
  • Giovanni Vacca (né le 18 novembre 1872 à Gênes et mort le 6 janvier 1953 à Rome) fut d'abord mathématicien, s'intéressa à l'histoire des sciences, puis fit carrière comme sinologue. Il reste connu pour avoir été un proche collaborateur de Giuseppe Peano, et de son programme de formalisation des mathématiques. (fr)
  • Giovanni Vacca (Genova, 18 novembre 1872 – Roma, 6 gennaio 1953) è stato un matematico, storico della scienza e sinologo italiano. (it)
  • Giovanni Enrico Eugenio Vacca (Gênova, 18 de novembro de 1872 – Roma, 6 de janeiro de 1953) foi um matemático, sinologista e historiador da ciência italiano. Vacca estudou matemática na Universidade de Gênova, onde obteve um doutorado em 1897, orientado por . Foi para a Universidade de Turim, onde foi assistente de Giuseppe Peano. Em 1899 estudou em Hannover manuscritos não publicados de Gottfried Wilhelm Leibniz, que publicou em 1903. Em torno de 1898 Vacca tornou-se interessado na linguagem e cultura chinesa, quando visitou uma exposição chinesa em Turim. Teve aulas particulares de língua chinesa e continuou a estudá-la na Universidade de Florença. Vacca viajou então para a China em 1907–1908 e defendeu uma tese sobre estudos chineses em 1910. Em 1911 foi lecturer de literatura chinesa na Universidade de Roma "La Sapienza". Em 1922 foi para a Universidade de Florença onde lecionou literatura e língua chinesa até 1947. Os interesses de Vacca foram igualmente direcionados para matemática, sinologia e história da ciência, com o correspondente número de artigos 38, 47 e 45. Em 1910 Vacca desenvolveu uma iteração com números complexos para pi: A eficiência de cálculo destas fórmulas é significativamente pior que o moderno algoritmo de Borwein – a convergência é de apenas cerca de meio dígito decimal a cada iteração. Vacca publicou suas duas maiores contribuições à matemática em 1910 e 1926, sobre expansão em série da constante de Euler-Mascheroni. Estas são, respectivamente Vacca anotou em 1910 que: Existe alguma esperança que esta série pode ser de alguma utilidade na prova da irracionalidade de , um problema muito difícil, proposto mas não resolvido na correspondência recentemente publicada entre Hermite e Stieltjes. (pt)
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  • 1872-11-18 (xsd:date)
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  • Rome, Italy (en)
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  • Giovanni Vacca (Gènova, 18 de novembre de 1872 - Roma, 6 de gener de 1953) va ser un matemàtic, historiador de la ciència i sinòleg italià. (ca)
  • Giovanni Vacca (né le 18 novembre 1872 à Gênes et mort le 6 janvier 1953 à Rome) fut d'abord mathématicien, s'intéressa à l'histoire des sciences, puis fit carrière comme sinologue. Il reste connu pour avoir été un proche collaborateur de Giuseppe Peano, et de son programme de formalisation des mathématiques. (fr)
  • Giovanni Vacca (Genova, 18 novembre 1872 – Roma, 6 gennaio 1953) è stato un matematico, storico della scienza e sinologo italiano. (it)
  • Giovanni Enrico Eugenio Vacca (* 18. November 1872 in Genua; † 6. Januar 1953 in Rom) war ein italienischer Mathematiker. Er studierte in Genua Mathematik und promovierte 1897 bei . Im November 1897 wurde er Assistent bei Giuseppe Peano, den er beim Verfassen seiner Formulario unterstützte. Er beschäftigte sich auch mit Geschichte der Mathematik und Naturwissenschaften. 1899 studierte er in Hannover die unpublizierten Manuskripte von Gottfried Wilhelm Leibniz, die er 1903 teilweise veröffentlichte. Er bemerkte dazu: Weiter hat er 1910 eine komplexe Iteration für die Kreiszahl publiziert: mit . (de)
  • Giovanni Enrico Eugenio Vacca (18 November 1872 – 6 January 1953) was an Italian mathematician, Sinologist and historian of science. Vacca studied mathematics and graduated from the University of Genoa in 1897 under the guidance of G. B. Negri. He was a politically active student and was banished for that from Genoa in 1897. He moved to Turin and became an assistant to Giuseppe Peano. In 1899 he studied, at Hanover, unpublished manuscripts of Gottfried Wilhelm Leibniz, which he published in 1903. Around 1898 Vacca became interested in Chinese language and culture after attending a Chinese exhibition in Turin. He took private lessons of Chinese and continued to study it at the University of Florence. Vacca then traveled to China in 1907–8. Originally he had planned to study the history of C (en)
  • Giovanni Enrico Eugenio Vacca (Gênova, 18 de novembro de 1872 – Roma, 6 de janeiro de 1953) foi um matemático, sinologista e historiador da ciência italiano. Vacca estudou matemática na Universidade de Gênova, onde obteve um doutorado em 1897, orientado por . Foi para a Universidade de Turim, onde foi assistente de Giuseppe Peano. Em 1899 estudou em Hannover manuscritos não publicados de Gottfried Wilhelm Leibniz, que publicou em 1903. Em torno de 1898 Vacca tornou-se interessado na linguagem e cultura chinesa, quando visitou uma exposição chinesa em Turim. Teve aulas particulares de língua chinesa e continuou a estudá-la na Universidade de Florença. Vacca viajou então para a China em 1907–1908 e defendeu uma tese sobre estudos chineses em 1910. Em 1911 foi lecturer de literatura chinesa n (pt)
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  • Giovanni Vacca (ca)
  • Giovanni Enrico Eugenio Vacca (de)
  • Giovanni Vacca (mathematician) (en)
  • Giovanni Vacca (it)
  • Giovanni Vacca (matematico) (it)
  • Giovanni Vacca (fr)
  • Giovanni Vacca (pt)
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  • Giovanni Vacca (en)
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