Cubism Ossip Zadkine as well as Jacques Lipchitz and Henri Laurens; and painters such as Louis Marcoussis, Roger de La Fresnaye, František Kupka, Diego Rivera, Léopold Survage, Auguste Herbin, André Lhote, Gino Severini (after 1916), María Blanchard (after 1916) and Georges Valmier (after 1918). More fundamentally, Christopher Green argues that Douglas Cooper's terms were "later undermined by interpretations of the work of Picasso, Braque, Gris and Léger that stress iconographic and ideological questions rather than methods of representation." John Berger identifies the essence of Cubism with the mechanical diagram. "The metaphorical model of Cubism is the diagram: The diagram being a
Braque Triptych is encased in glass. Braque Triptych The Braque Triptych (or the Braque Family Triptych) is a c. 1452 oil-on-oak altarpiece by the Early Netherlandish painter Rogier van der Weyden. When open, its three half-length panels reveal, from left to right, John the Baptist, The Virgin Mary with Jesus and Saint John the Evangelist, and on the right, Mary Magdalene. When the wings are closed, the work shows a vanitas motif of a skull and cross. "The Braque Triptych" is the only surviving devotional work by van der Weyden known to be painted for private rather than public display. The altarpiece