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
Vrancke van der Stockt often reproduce motifs from paintings by Van der Weyden with only minor alterations, as is evidenced by "Kneeling Donor with Saint John the Baptist", now in the collection of the Allen Memorial Art Museum, in which the figure of the saint closely resembles that in Van der Weyden's "Medici Madonna". His "Pietà" is likewise modelled on van der Weyden's "Pietà". Although he was primarily a painter, Van der Stockt also completed cartoons for embroideries and tapestries and designs for woodcuts. None of Van der Stockt's works are documented; rather, they have been attributed to him based on their stylistic relationship