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The main goal of this paper is twofold. On the one hand, we will present two of the most important contemporary semantic theories far discourse processing: Situation Semantics or SS (Barwise and Perry (1993)) and Discourse Representation Theory or DRT (Kamp (1981)). Both are formal theories, and therefore, they meet a necessary -though not sufficientrequirement far their eventual irnplementation. On the other hand, we will study a classical issue in the theory of language, namely, natural language negation. We will consider its treatment in these semantic theories, trying to show why negation has always resisted to a satisfactory treatment., and remains as an unsolved problem from Aristotle to contemporary philosophy, syntax, semantics and pragmatics (Hom (1989)). Then, we will malce a (modest) proposal that will be showed to solve sorne of the problems of SS and DRT far treating negation. Our proposal consists in linking negation with a theory of informational partition in the frame of an enriched version of DRT called Segmented DRT (Asher (1993)).

Semánticas formales para el procesamiento del discurso y la negación