Mathematics and art through the strings as with a bird cage and to see one form within another which excited me." The artists Theo van Doesburg and Piet Mondrian founded the De Stijl movement, which they wanted to "establish a visual vocabulary elementary geometrical forms comprehensible by all and adaptable to any discipline". Many of their artworks visibly consist of ruled squares and triangles, sometimes also with circles. De Stijl artists worked in painting, furniture, interior design and architecture. After the breakup of De Stijl, Van Doesburg founded the Avant-garde Art Concret movement, describing his 1929–1930 "Arithmetic Composition", a series of four black
Hugo van der Velden Hugo van der Velden Hugo Tjeerd van der Velden (born 19 October 1963, in Boxmeer) is a Dutch art historian. He currently is Rijksmuseum Chair of Art History of the Middle Ages, especially in the Low Countries. A position in collaboration with Universiteit van Amsterdam. Hugo van der Velden studied art history at the Universiteit Utrecht, where he also taught from 1992-2003. During this time he was also a fellow at the Warburg Institute and a visiting lecturer at the Courtauld Institute. In 2003, he was appointed as a Professor in the History of Art and Architecture department at Harvard