On the meaning of "but"

  • Authors:
  • Pierre-Yves Schobbens

  • Affiliations:
  • Université Catholique de Louvain, Place Sainte Barbe, B-1348 Louvain-La-Neuve

  • Venue:
  • IWSSD '91 Proceedings of the 6th international workshop on Software specification and design
  • Year:
  • 1991

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Abstract

In this paper, a formalisation of exceptions to a general rule is proposed. It builds upon the modularisation of theories proposed by the algebraic specification approach, and preserves its engineering principles: modularity and compositionality. It relies on a model-theoretic definition of the "but" conjunctive, whose properties and implementations are explored.