Types for Proofs and Programs : International Conference

These proceedings contain a selection of refereed papers presented at or related totheAnnualWorkshopoftheTYPESproject(EUcoordinationaction510996), which was held during May 2-5, 2007 in Cividale del Friuli (Udine), Italy. The topic of this workshop was formal reasoning and computer progr- ming basedon type theory: languagesand computerized toolsfor reasoning, and applications in several domains such as analysis of programming languages, c- ti?ed software, formalization of mathematics and mathematics education. The workshopwasattended by morethan 100researchersandincluded morethan 40 presentations. We also had the pleasure of three invited lectures, from Fr ed eric Blanqui (INRIA, Protheo team), Peter Sewell (University of Cambridge) and Amy Felty (University of Ottawa). From 22 submitted papers, 13 were selected after a reviewing process. Each submitted paper was reviewed by three referees; the ?nal decisions were made by the editors. This workshop is the last of a series of meetings of the TYPES working group funded by the European Union (IST project 29001, ESPRIT Working Group 21900, ESPRIT BRA 6435).