Add to ORKGDetail, upper right corner; In autumn 1921 Kandinsky was invited by Walter Gropius to visit the Bauhaus and became a professor at the Bauhaus in Weimar. By 1921 he began to use the circle in several canvases, which reflected his exposure to the Russian avant-garde artists. During the Bauhaus period, Kandinsky used circles, squares, triangles, zigzags, chequer-boards and arrows as components of his abstract vocabulary. They became meaningful pictorial elements just as the abstract images of towers, horses, boats and rowers had carried connotations in his art in earlier years. In the mid-1920s the theoretical aspect of Kandinsky’s work became increasingly apparent. He painted Yellow-Red-Blue while working on the manuscript of Punkt und Linie ...