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
Wietske van Leeuwen 1989 to 1993 under Jan van der Vaart, and Henk Trumpie. After graduation she settled in Amsterdam as an independent artist and started her own studio. In 1996 Van Leeuwen was nominated for the NPS Cultuurprijs 1996, a battle between young unknown artists which was aired on national television. Van Leeuwen received a number of grants from the Mondriaan Fonds, the Dutch fund for visual art and cultural heritage. Since 1997 she is also working as a ceramics and drawing teacher at Altra College, Amsterdam. Van Leeuwen's work is included in the collection of the Gemeentemuseum Den Haag, the Museum