French Cameroons
From a Corsican family, Antoine was born on June 4, 1944, in Toamasina in Madagascar, then part of the French colonial empire for which his father was working. As a child he lived in Saint Pierre and Miquelon, Marseille, and French Cameroons, returning to Metropolitan France for good in 1958. He was graduated from the Lycée Champollion in Grenoble, excelling in advanced mathematics.