Ernest de Jonquières

Ernest Jean Philippe Fauque de Jonquières (3 July 1820 – 12 August 1901) was a French mathematician and naval officer who made several contributions in geometry. He was born in Carpentras, and died, aged 81, in Mousans-Sartoux.

Jonquières attended the naval school at Brest, and was afterwards in the French Navy. in 1841 he became lieutenant, and from 1849 to 1850, he served on the staff of Admiral in Paris. During this time he became a close associate of Michel Chasles, whose works he had studied. During his subsequent time at sea, he continued his mathematical studies and won a part of the Grand Prix of the French Academy of Sciences in 1862. in 1865, he became a captain and was sent to Saigon, to organize a French agricultural and industrial exhibition. He played an important role in the development as a French colony. Later, he was head of the naval Depot and the maps and plans. in 1874 he was made Vice-Admiral and in 1885, he went into retirement.