Esprit Jouffret
Esprit Jouffret was a French artillery officer, insurance actuary and mathematician, author of Traité élémentaire de géométrie à quatre dimensions, a popularization of Henri Poincaré's Science and Hypothesis in which Jouffret described hypercubes and other complex polyhedra in four dimensions and projected them onto the two-dimensional page.
Maurice Princet brought Traite to artist Pablo Picasso's attention. Picasso's sketchbooks for his 1907 painting Les Demoiselles d'Avignon illustrate Jouffret's influence on the artist's work.
