1863-1935. French artist. In 1884 he joined with Georges Seurat in founding the Societe des Artistes Independants and developing the technique of Pointillism. Signac, born in Paris, was inspired by the Impressionist painter Monet. He laid down the theory of Neo-Impressionism in his book De Delacroix au Neo-Impressionisme 1899. From the 1890s he developed a stronger and brighter palette. He and Matisse painted together in the south of France 1904-05.