Leon Chwistek

Leon Chwistek
Portrait of Leon Chwistek by Witkacy, 1913

Leon Chwistek (Kraków, Austria-Hungary, 13 June 1884 – Barvikha near Moscow, Russia, 20 August 1944) was a Polish avant-garde painter, theoretician of modern art, literary critic, logician, philosopher and mathematician.