Theories of programming and formal methods : essays dedicated to Jifeng He on the occasion of his 70th birthday This Festschrift volume dedicated to He Jifeng on the occasion of his 70th birthday in September 2013 includes 24 refereed papers by leading researchers current and former colleagues who congratulated at a celebratory symposium held in Shanghai China in the course of the 10th International Colloquium on Theoretical Aspects of Computing ICTAC 2013. The papers cover a broad spectrum of subjects from foundational and theoretical topics to programs and systems issues and to applications comprising formal methods software and systems modeling semantics laws of programming specification and verification as well as logics