Disbelief Change


Anna Gomolinska
David Pearce

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Keywords: AGM theory, Rejection consequence


Abstract
: In the paper we address the problem of change of belief state of a rational agent. In our representation of belief state both beliefs and disbeliefs are taken into account. On the belief part, the starting point is the AGM theory [1, 5, 6]. On the disbelief part, we build a counterpart of the AGM model starting with the rejection consequence Cn´ introduced in [2, 4]. Next we investigate changes of pairs of sets of formulae representing belief states.


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Anna Gomolinska,
anna.gom@math.uwb.edu.pl
University of Bialystok,
Poland

David Pearce, pearce@dfki.de
DFKI Saarbrücken
Germany


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Dedicated to Peter Gärdenfors on His Fiftieth Birthday