Henri Brocard

Henri Brocard (1845 to 1922) was a French mathematician and army officer, best known for discovering the Brocard points of a triangle. He was born at Vignot, now part of Commercy, attended the lycées of Marseilles and Strasbourg, and studied at the École Polytechnique from 1865 to 1867 before joining the Engineering Corps of the French Army. He was among the French soldiers taken prisoner at Sedan in 1870, joined the Société Mathématique de France the year after its founding in 1872, and spent about ten years from 1874 in North Africa, mostly in Algiers, where he helped found the Meteorological Institute and in 1881 presented the paper that introduced the Brocard circle. He died in Bar-le-Duc. Brocard's conjecture on the primes lying between the squares of consecutive primes is named after him.