Matthias Felleisen. On the Expressive Power of Programming Languages. In Neil D. Jones, editor, ESOP 90, 3rd European Symposium on Programming, Copenhagen, Denmark, May 15-18, 1990, Proceedings. Volume 432 of Lecture Notes in Computer Science, pages 134-151, Springer, 1990.
The literature on programming languages contains an abundance of informal claims on the relative expressive power of programming languages, but there is no framework for formalizing such statements nor for deriving interesting consequences. As a first step in this direction, we develop a formal notion of expressiveness and investigate its properties. To demonstrate the theory’s closeness to published intuitions on expressiveness, we analyze the expressive power of several extensions of functional languages. Based on these results, we believe that our system correctly captures many of the informal ideas on expressiveness, and that it constitutes a good basis for further research in this direction.