Kurt Godel was the most outstanding logician of the 20th century. These books are part of a five volume set that makes available all of Godels writings. These final two volumes deal with his correspondence with his contemporary mathematicians, the fourth volume consisting of material from correspondents from A-G and the fifth from H-Z.

Kurt Godel was one of the most outstanding logicians of the twentieth century, famous for his work on the completeness of logic, the incompleteness of number theory, and the consistency of the axiom of choice and the continuum hypothesis. He is also noted for his work on constructivity, the decision problem, and the foundations of computation theory, as well as for the strong individuality of his writings on the philosophy of mathematics. He is less well known for his discovery of unusual cosmological models for Einstein's equations, in theory, permitting time travel into the past. These books are the fourth and fifth part of a five volume set, which is the first to make available all of Godels writings in the one place. The first three volumes have recieved acclaim, and consist of the papers and essays of Godel. The final two volumes of the set deal with Godel's correspondence with his contempary mathematicians. The fourth volume consists of material from correspondents from A-G, with explanatory and introductory material. The final volume consists of the remaining corrsepondence from H-Z. The Collected Works of Kurt Godel is designed to be useful and accessible to a wide audience without sacrificing scientific or historical accuracy. They are the only complete editions available in English, and are essential to students and professionals in logic, mathematics, philosophy, history of science, and computer science as well as those curious about one of the great minds of the twentieth century.