, was born at Lyons, but in what year is not known. He was Counsellor to the Parliament of Toulouse, afterward Counsellor to the Grand Council, and Keeper of the King's Library. He was appointed Geometrician to the French Academy of Sciences in 1666; and died at Paris in 1684. There are extant some letters of his, printed among those of Descartes.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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