The publication nul = 0: The Dutch Nul Group in an International Context reveals the artistic principles of the Nul movement. Leading international writers reconstruct the developments and collaborations of the Dutch Nul group with its spiritual brethren: the artists of the German Zero, the French Nouveau Réalisme, Italy’s Azimut Group and the Japanese Gutai Group, as well as individual artists like Yves Klein, Yayoi Kusama and Lucio Fontana. Given the current generation of artists’ rediscovery of such elements as time and space, light and motion, the achievements of these artists are now more relevant than ever.