Augustin Sesmat

Augustin Sesmat ((1885-04-07)April 7, 1885 Dieulouard -- December 12, 1957(1957-12-12) (aged 72))^[1] was a French mathematician and logician. He was professor of history and criticism of science at the Institut Catholique de Paris in the 1930s.^[2] He was probably the first person to discover the logical hexagon, thus solving a problem posed by Aristotle.