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- Joseph-Émile_Barbier abstract "Joseph-Émile Barbier (1839–1889) was a French astronomer and mathematician, known for Barbier's theorem on the perimeter of curves of constant width.Barbier was born on March 18, 1839, in Saint-Hilaire-Cottes, Pas-de-Calais, in the north of France.He studied at the College of Saint-Omer, also in Pas-de-Calais, and then at the Lycée Henri-IV in Paris. He entered the École Normale Supérieure in 1857, and finished his studies there in 1860, the same year in which he published the paper containing his theorem on constant-width curves.He began teaching at a lycée in Nice, but it was not a success, and he soon moved to a position as an assistant astronomer at the Paris Observatory. He left there in 1865, and in 1880 Joseph Louis François Bertrand found him in the Charenton asylum. Bertrand arranged for Barbier's support and encouraged him to return to mathematical publication.In this later period of his work, he published ten more papers. He contributed to Bertrand's studies of combinatorics, and announced a generalization of Bertrand's ballot theorem.He was given the Francoeur Prize for his mathematical research by the French Academy of Sciences in multiple years.Barbier died on January 28, 1889, in Saint-Genest, Loire.".
- Joseph-Émile_Barbier birthDate "1839".
- Joseph-Émile_Barbier deathDate "1889".
- Joseph-Émile_Barbier wikiPageID "35589729".
- Joseph-Émile_Barbier wikiPageRevisionID "549909028".
- Joseph-Émile_Barbier dateOfBirth "1839".
- Joseph-Émile_Barbier dateOfDeath "1889".
- Joseph-Émile_Barbier name "Barbier, Joseph-Emile".
- Joseph-Émile_Barbier shortDescription "French astronomer".
- Joseph-Émile_Barbier description "French astronomer".
- Joseph-Émile_Barbier subject Category:1839_births.
- Joseph-Émile_Barbier subject Category:1889_deaths.
- Joseph-Émile_Barbier subject Category:19th-century_French_mathematicians.
- Joseph-Émile_Barbier subject Category:19th-century_astronomers.
- Joseph-Émile_Barbier subject Category:French_astronomers.
- Joseph-Émile_Barbier subject Category:People_from_Pas-de-Calais.
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- Joseph-Émile_Barbier comment "Joseph-Émile Barbier (1839–1889) was a French astronomer and mathematician, known for Barbier's theorem on the perimeter of curves of constant width.Barbier was born on March 18, 1839, in Saint-Hilaire-Cottes, Pas-de-Calais, in the north of France.He studied at the College of Saint-Omer, also in Pas-de-Calais, and then at the Lycée Henri-IV in Paris.".
- Joseph-Émile_Barbier label "Joseph Émile Barbier".
- Joseph-Émile_Barbier label "Joseph-Émile Barbier".
- Joseph-Émile_Barbier sameAs Joseph-%C3%89mile_Barbier.
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- Joseph-Émile_Barbier sameAs Q3185904.
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- Joseph-Émile_Barbier wasDerivedFrom Joseph-Émile_Barbier?oldid=549909028.
- Joseph-Émile_Barbier givenName "Joseph-Emile".
- Joseph-Émile_Barbier name "Joseph-Emile Barbier".
- Joseph-Émile_Barbier surname "Barbier".