Departamento de Econom a, Universidad del Sur, Argentina
Abstract
Carlos Alchourron was a scholar in the old tradition, with a vast culture and a passion for knowledge. His initial research, with Eugenio Bulygin on Normative Systems ( Alchourron-Bulygin 71]), led him to the realization that legal reasoning is actually representative of a more general kind of reasoning. He subsequently concluded that classical mathematical logic was not appropiate for formalizing this ampliative and non-deterministic kind of reasoning. His line of attack shows clearly in the characteristics of the AGM system of belief revision AGM 85]. The language of mathematical logic was preserved and the only big departure from that tradition is the addition of a formalism to represent changes of a theory. The key Error: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapelement is a non-constructive choice function that provides for a selection of \worlds" (maximally consistent extensions of a theory), which allows a consistent view of the revision to be applied..