Newton C. A. da Costa
Newton Carneiro Affonso da Costa (b. 1929) is one of the foremost logicians in the world. His field of expertise is nonclassical logics (his name is associated with the paraconsistent logics he developed) but this collection of essays deals with the Gödel incompleteness phenomenon in mathematics, physics and economics, besides applications to computer science.
Francisco Antonio de Moraes Accioli Doria (b. 1945) is a mathematical physicist that has been collaborating with da Costa since 1985.