Georges Koskas
Georges Koskas (1926–2013) was a Tunisian painter associated with geometric abstraction and the postwar movement of non-figurative art in Paris. He settled in Paris in 1946 and became one of the more original figures of geometric abstraction in France in the late 1940s and early 1950s. Koskas was a friend of Ellsworth Kelly, and the two artists exhibited together at the Salon des Réalités Nouvelles in 1951. Together with Kelly and Youngerman they persuaded Jean-Robert Arnaud and his partner John-Franklin Koenig to convert the basement bookshop into an exhibition space, which later became known as Galerie Arnaud.