Accession Number:

ADA275342

Title:

North American Jumelage 'Type Systems'

Descriptive Note:

Final rept. 15 Oct 1992-14 Oct 1993

Corporate Author:

PENNSYLVANIA UNIV PHILADELPHIA

Personal Author(s):

Report Date:

1993-10-20

Pagination or Media Count:

31.0

Abstract:

The methods of classical denotational semantics provide a number of valuable tools to designers of sequential Algol-like programming languages. In particular, Algol-like languages can be described by recursive domain equations and semantic clauses. It is rather difficult to solve such equations from first principles. Fortunately for language designers, the metatheory of denotational semantics shows that every set of recursive domain equations has a solution. Indeed, the metatheory is so powerful that programming language designers can use the theory naively and be guaranteed that no foundational problems will arise. However, the theory that has been so successful for Algol-like languages is less appropriate for concurrency. The approach to language definition that seems most effective so far is structural operational semantics SOS. To date, most uses of SOS for language definitions have been ad-hoc. We sketch the outlines of a metatheory of SOSses as used to define concurrent languages, and in particular the discipline of process algebras.

Subject Categories:

  • Operations Research
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE