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
Theo van Gogh (art dealer) the introduction of contemporary Dutch and French art to the public. Theodorus "Theo" van Gogh was born on 1 May 1857 in the village Groot-Zundert in the province of North Brabant, Netherlands. He was the son of Theodorus van Gogh and Anna Cornelia Carbentus. His elder brother was artist Vincent van Gogh (1853–1890). Theo worked for some years at the Dutch office of the Parisian art dealers Goupil & Cie in The Hague. Theo joined the Brussels office on 1 January 1873 as their youngest employee. After Theo was transferred to the London office, he moved to the office in