On Teaching the Concept of Refinement with B

 https://www.academia.edu/13917699/On_Teaching_the_Concept_of_Refinement_with_B?email_work_card=abstract-read-more

 

Joanna Tomasik Guy Vidal-Naquet Computer Science Department SUPELEC Gif-sur-Yvette, France  

 

Abstract The concept of refinement is central to the development of software. It appears in various forms in the different methodologies taught to students. A key point in the B method is the validation of the refinement step. The B methodology exhibits mathematical properties of correct refinements, and also automatically checkable conditions that ensure those properties. Some of the main pedagogical difficulties that the present authors found in teaching B centered around the notions linked to refinement, at the conceptual level, and at the tool level. Many papers have been published on the general benefits of the B method. This paper will focus on the specific concepts linked to refinements, and on the ones which need special care. We argue that, although B presents a complete mathematical analysis, it is beneficial to put the concept of refinement in perspective with other theories that come from formal methods, namely, in this paper, coalgebra and bisimulation. 

 

  Keywords: Coalgebra, Gluing invariant, Morphism, Refinement.  

Comments

Popular posts from this blog

Ce que je dois à Jean-Raymond Abrial

Jean-Raymond Abrial (1938, 2025)

On B, Jean-Raymond Abrial