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
Gerard van der Lem Gerard van der Lem Gerard van der Lem (born November 15, 1952) is a retired football winger from the Netherlands, who made his professional debut for FC Amsterdam on August 12, 1973 against PSV Eindhoven. He later played for Roda JC, Feyenoord Rotterdam, Sparta Rotterdam and FC Utrecht. After his professional playing career Gerard Van der Lem started his coaching career as assistant coach to world-famous coaches like Piet de Visser, Dick Advocaat and Louis van Gaal. In his first engagement at FC Alkmaar (AZS) he was responsible coach for the amateur teams (and became Holland Champion in 1985) as