Mathematics of Program Construction : 6th International Conference MPC 2002 Dagstuhl Castle Germany July 8–10 2002 Proceedings This book constitutes the refereed proceedings of the 6th International Conference on Mathematics of Program Construction MPC 2002 held in Dagstuhl Castle Germany in July 2002. The 11 revised full papers presented were carefully reviewed and selected for inclusion in the book; also presented are one invited paper and the abstracts of two invited talks. Among the topics covered are programming methodology program specification program transformation programming paradigms programming calculi and programming language semantics