Lucio Fontana was an Italian painter, sculptor and theorist of Argentine birth. He is mostly known as the founder of Spatialism and his ties to Arte Povera.

From 1949 he started his so-called Spatial Concept or slash series, consisting of holes or slashes in the surface of monochrome paintings. He chose the generic title Concetto spaziale (‘spatial concept’) for these works and used it for almost all his later paintings. These can be divided into broad categories: the Buchi (‘holes’), beginning in 1949, and the Tagli (‘slashes’), which he instituted in the mid-1950s.