In 1846 he was appointed to a chair of higher geometry at the Sorbonne which had been specially created for him.
In 1846 he was appointed to a chair of higher geometry at the Sorbonne which had been specially created for him.
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У 1846 році він був призначений на кафедру вищої геометрії в Сорбонні, які були створені спеціально для нього.
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