Abstract art based on Cézanne's idea that all depiction of nature can be reduced to three solids: cube, sphere and cone. With the painting "Les Demoiselles d'Avignon" (1907), Picasso dramatically created a new and radical picture depicting a raw and primitive brothel scene with five prostitutes, violently painted women, reminiscent of African tribal masks and his own new Cubist inventions. Analytic cubism was jointly developed by Pablo Picasso and Georges Braque, from about 1908 through 1912. Analytic cubism, the first clear manifestation of cubism, was followed by Synthetic cubism, practiced by Braque, Picasso, Fernand Léger, Juan Gris, Albert Gleizes, Marcel Duchamp and
Picasso's African Period and reworked in July of that year), especially in the treatment of the two figures on the right side of the composition. Although "Les Demoiselles" is seen as a proto-cubist work, Picasso continued to develop a style derived from African art before beginning the analytic cubism phase of his painting in 1910. Other works of Picasso's African Period include the "Bust of a Woman" (1907, in the National Gallery, Prague); "Mother and Child" (Summer 1907, in the Musée Picasso, Paris); "Nude with Raised Arms" (1907, in the Thyssen-Bornemisza Museum, Madrid, Spain); and "Three Women" (Summer 1908, in the Hermitage Museum,