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Bertrand, Joseph

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Born: 1822 AD
Died: 1900 AD, at 78 years of age.

Nationality: French
Categories: Mathematicians

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1822 - Born on the 11th of March in Paris, France. French mathematician and educator remembered for his elegant applications of differential equations to analytical mechanics, particularly in thermodynamics, and for his work on statistical probability and the theory of curves and surfaces.

1836 - He received his doctorate, he officially entered the École Polytechnique and also published his first paper on the mathematical theory of electricity.

         - Bertrand was a professor at the École Polytechnique and Collège de France.

1839 - He received his doctorate, he officially entered the École Polytechnique and also published his first paper on the mathematical theory of electricity.

1843 - Bertrand published the memoirs on Surfaces isothermes orthogonale.

1844 - He was appointed répétiteur d'analyse at the École Polytechnique.

1845 - He conjectured that there is at least one prime between n and 2n-2 for every n > 3.

1850 - Chebyshev proved this conjecture, which now called Bertrand's postulate.

         - He is famous for a paradox in the field of probability, now known as Bertrand's Paradox.

1855 - He translated Gauss's work on the theory of errors and the method of least squares into French.

1862 - He held a chair at the prestigious Collège de France.
 
         - He was also a member of the influential Académie des Sciences.  

1883 - Bertrand decided to publish a review of Walras's book in the Journal des Savants.

1888 - His book Calcul des probabilitiés contains a paradox on continuous probabilities now known as Bertrand's paradox.

1900 - Joseph Louis François Bertrand died on 5th of April in Paris, France.

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