Mild Contraction

Isaac Levi develops further his pioneering work in formal epistemology, focusing on the problem of belief contraction, or how rationally to relinquish old beliefs. Levi offers the most penetrating analysis to date of this key question in epistemology, offering a completely new solution and explaining its relation to his earlier proposals. It will be of great interest to all specialists in belief revision theory and to many students of formal epistemology, philosophy of science, and pragmatism.