Resumo

FERME, Eduardo  e  RODRIGUEZ, Ricardo. DFT and belief revision. Anal. filos. [online]. 2006, vol.26, n.2, pp.373-393. ISSN 1851-9636.

Alchourrón devoted his last years to the analysis of the notion of defeasible conditionalization. He developed a formal system capturing the essentials of this notion. His definition of the defeasible conditional is given in terms of strict implication operator and a modal operator f which is interpreted as a revision function at the language level. In this paper, we will point out that this underlying revision function is more general than the well known AGM revision [4]. In addition, we will give a complete characterization of that more general kind of revision and will show how permits to unify models of revision given by other authors.

Palavras-chave : Defeasible conditional; Strict implication; Revision function.

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