Abstract

Update semantics embodies a radical view on the relation between context and interpretation. The meaning of a sentence is identified with its context change potential, where contexts are identified with information states. The object language in this paper is the language of modal predicate logic, enriched with demonstratives. Contextual features that are taken into account are restricted to anaphoric relations between variables and quantifiers, and the role of epistemic modalities. In the present paper we turn to information exchange in multi-speaker discourse. 3 The main aim is to shed some light on anaphoric relations across utterances of different speakers, and on the role of epistemic modalities in information exchange.