A brief note about Rott contraction

Fermé, Eduardo L.; Rodriguez, Ricardo O.

http://hdl.handle.net/10400.13/3464

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Authors

Fermé, Eduardo L.

Rodriguez, Ricardo O.

Abstract(s)

One of the ways to model contraction functions for belief sets is epistemic entrenchment. The first step was provided by G¨ardenfors in [5], who defined epistemic entrenchment and a contraction function in terms of it and related the latter with the AGM contraction function. Later Hans Rott in [16] presented an entrenchment based contraction function that does not satisfy recovery. In this paper we provide an axiomatic characterization of Rott Contraction.1