We present a refinement ordering between binary relations, viewed as programs or
specifications. This ordering induces a complete join semilattice that can be embedded in a …

A fault is an attribute of a program that precludes it from satisfying its specification; while this
definition may sound clear-cut, it leaves many details unspecified. An incorrect program may …

Echoing Louis Pasteur's quote, we submit the premise that it is advantageous to define
measures of distance between requirements specifications because such measures open …

Given a specification that includes a number of user requirements, we wish to focus on the
requirements in turn, and derive a partly defined program for each; then combine all the …

Program construction by parts consists of tackling a complex specification one component at
a time, develo** a partially defined solution for each component, then combining the …

Relations and relational operators can be used to define the semantics of programming
languages. The operations∨ and∘ serve to give angelic semantics by defining a program to …

Refinement and Development of Programs from Relational Specifications Page 1 Electronic
Notes in Theoretical Computer Science 44 No. 3 (2003) URL: http://www.elsevier.nl/locate/entcs/volume44.html …

Given a specification that includes a number of user requirements, we wish to focus on the
requirements in turn, and derive a partly defined program for each; then combine all the …

Cette thèse s' intéresse à la programmation certifiée correcte dans le cadre formel fourni par
l'assistant de preuve Coq, et conduite par étapes de raffinements, avec l'objectif d'aboutir à …

Many safety-critical computer systems are required to monitor and control physical
processes. The four-variable model, which has been used successfully in industry for almost …