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Thomas Clausen (16 January 1801, , , Duchy of Schleswig (now Denmark) – 23 May 1885, Dorpat, Imperial Russia (now Estonia)) was a Danish mathematician and astronomer. Clausen learned mathematics at home. In 1820, he became a trainee at the Munich Optical Institute and in 1824, at the Altona Observatory after he showed Heinrich Christian Schumacher his paper on calculating longitude by the occultation of stars by the moon. He eventually returned to Munich, where he conceived and published his best known works on mathematics. In 1842 Clausen was hired by the staff of the Tartu Observatory, becoming its director in 1866-1872.

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  • توماس كلوسين (بالإنجليزية: Thomas Clausen )‏ (و. 1801 – 1885 م) هو رياضياتي، وعالم فلك من دوقية شليسفيغ .توفي في تارتو، عن عمر يناهز 84 عاماً. (ar)
  • Thomas Clausen (1801-1885) fou un matemàtic i astrònom danès. (ca)
  • Thomas Clausen (* 16. Januar 1801 in , Gemeinde Sottrup, Herzogtum Schleswig (heute Dänemark); † 12. Maijul. / 24. Mai 1885greg. in Dorpat) war ein dänischer (schleswigscher) Astronom und Mathematiker. (de)
  • Thomas Clausen (16 de enero de 1801, Snogbæk, Sottrup, Ducado de Schleswig (actualmente Dinamarca) – 23 de mayo de 1885, Tartu, Imperio Ruso (actualmente Estonia)) fue un matemático y astrónomo danés. (es)
  • Thomas Clausen est un astronome et mathématicien danois, né le 16 janvier 1801 à Snogbæk, commune de Sottrup, duché de Schleswig et mort le 24 mai 1885 à Tartu. (fr)
  • Thomas Clausen (16 January 1801, , , Duchy of Schleswig (now Denmark) – 23 May 1885, Dorpat, Imperial Russia (now Estonia)) was a Danish mathematician and astronomer. Clausen learned mathematics at home. In 1820, he became a trainee at the Munich Optical Institute and in 1824, at the Altona Observatory after he showed Heinrich Christian Schumacher his paper on calculating longitude by the occultation of stars by the moon. He eventually returned to Munich, where he conceived and published his best known works on mathematics. In 1842 Clausen was hired by the staff of the Tartu Observatory, becoming its director in 1866-1872. Works by Clausen include studies on the stability of Solar System, comet movement, ABC telegraph code and calculation of 250 decimals of pi (later, only 248 were confirmed to be correct). In 1840 he discovered the Von Staudt–Clausen theorem. Also in 1840 he also found two compass and straightedge constructions of lunes with equal area to a square, adding to three (including the lune of Hippocrates) known to the ancient Greek mathematician Hippocrates of Chios; it was later shown that these five lunes are the only possible solutions to this problem. In 1854 he factored the sixth Fermat number as 264+1 = 67280421310721 × 274177. (en)
  • Thomas Clausen foi um matemático e astrônomo dinamarquês. Clausen aprendeu matemática em casa. Em 1820 foi aprendiz no Instituto Óptico de Munique, e em 1824 , após mostrar a Heinrich Christian Schumacher seu artigo sobre o cálculo de longitude pela ocultação de estrelas pela lua. Retornou para Munique, onde concebeu e publicou seus melhores conhecidos trabalhos sobre matemática. Em 1842 Clausen tornou-se membro do , sendo seu diretor em 1866-1872. As obras de Clausen incluem estudos sobre a estabilidade do Sistema Solar, movimento de cometas, ABC e cálculo de pi com 250 dígitos decimais (mais tarde apenas 248 dígitos foram confirmados ser corretos). Em 1840 descobriu o . Também em 1840 encontrou duas construções com compasso e régua de lúnulas com área igual a um quadrado, adicionalmente a três (incluindo a ) conhecidas do matemático grego antigo Hipócrates de Quios; foi mostrado mais tarde que estas cinco lúnulas são as únicas soluções possíveis deste problema. Em 1854 fatorou o sexto número de Fermat como 264+1 = 67280421310721 × 274177. (pt)
  • Томас Клаузен (также Клаусен, Thomas Clausen, 1801—1885) — датский астроном и математик. (ru)
  • Thomas Clausen, född 16 januari 1801 i Nybøl vid Slesvig, död 24 maj 1885 i Dorpat, var en dansk astronom och matematiker. Clausen blev 1842 observator vid observatoriet i Dorpat och var 1866-72 direktor för detsamma. Hans publicerade dels astronomiska arbeten, vilka främst behandlade beräkningen av elliptiska kometbanor (för en bestämning av banan för 1770 års komet fick han 1842 Videnskabernes Selskabs guldmedalj), dels matematiska, varav kan nämnas en beräkning av talet π (pi) med 250 decimaler. (sv)
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  • Clausen (en)
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  • Thomas Clausen (en)
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  • توماس كلوسين (بالإنجليزية: Thomas Clausen )‏ (و. 1801 – 1885 م) هو رياضياتي، وعالم فلك من دوقية شليسفيغ .توفي في تارتو، عن عمر يناهز 84 عاماً. (ar)
  • Thomas Clausen (1801-1885) fou un matemàtic i astrònom danès. (ca)
  • Thomas Clausen (* 16. Januar 1801 in , Gemeinde Sottrup, Herzogtum Schleswig (heute Dänemark); † 12. Maijul. / 24. Mai 1885greg. in Dorpat) war ein dänischer (schleswigscher) Astronom und Mathematiker. (de)
  • Thomas Clausen (16 de enero de 1801, Snogbæk, Sottrup, Ducado de Schleswig (actualmente Dinamarca) – 23 de mayo de 1885, Tartu, Imperio Ruso (actualmente Estonia)) fue un matemático y astrónomo danés. (es)
  • Thomas Clausen est un astronome et mathématicien danois, né le 16 janvier 1801 à Snogbæk, commune de Sottrup, duché de Schleswig et mort le 24 mai 1885 à Tartu. (fr)
  • Томас Клаузен (также Клаусен, Thomas Clausen, 1801—1885) — датский астроном и математик. (ru)
  • Thomas Clausen, född 16 januari 1801 i Nybøl vid Slesvig, död 24 maj 1885 i Dorpat, var en dansk astronom och matematiker. Clausen blev 1842 observator vid observatoriet i Dorpat och var 1866-72 direktor för detsamma. Hans publicerade dels astronomiska arbeten, vilka främst behandlade beräkningen av elliptiska kometbanor (för en bestämning av banan för 1770 års komet fick han 1842 Videnskabernes Selskabs guldmedalj), dels matematiska, varav kan nämnas en beräkning av talet π (pi) med 250 decimaler. (sv)
  • Thomas Clausen (16 January 1801, , , Duchy of Schleswig (now Denmark) – 23 May 1885, Dorpat, Imperial Russia (now Estonia)) was a Danish mathematician and astronomer. Clausen learned mathematics at home. In 1820, he became a trainee at the Munich Optical Institute and in 1824, at the Altona Observatory after he showed Heinrich Christian Schumacher his paper on calculating longitude by the occultation of stars by the moon. He eventually returned to Munich, where he conceived and published his best known works on mathematics. In 1842 Clausen was hired by the staff of the Tartu Observatory, becoming its director in 1866-1872. (en)
  • Thomas Clausen foi um matemático e astrônomo dinamarquês. Clausen aprendeu matemática em casa. Em 1820 foi aprendiz no Instituto Óptico de Munique, e em 1824 , após mostrar a Heinrich Christian Schumacher seu artigo sobre o cálculo de longitude pela ocultação de estrelas pela lua. Retornou para Munique, onde concebeu e publicou seus melhores conhecidos trabalhos sobre matemática. Em 1842 Clausen tornou-se membro do , sendo seu diretor em 1866-1872. (pt)
rdfs:label
  • توماس كلوسين (ar)
  • Thomas Clausen (ca)
  • Thomas Clausen (Astronom) (de)
  • Thomas Clausen (matemático) (es)
  • Thomas Clausen (astronome) (fr)
  • Thomas Clausen (pt)
  • Thomas Clausen (mathematician) (en)
  • Thomas Clausen (sv)
  • Клаузен, Томас (ru)
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