On ensconcement and contraction

Fermé, Eduardo; Garapa, Marco; Reis, Maurício

http://hdl.handle.net/10400.13/4977

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Authors

Fermé, Eduardo

Garapa, Marco

Reis, Maurício

Abstract(s)

In this article we present an axiomatic characterization for the ensconcement-based contractions. We study the interrelation among ensconcement-based contractions and brutal contractions, and we present two ways of defining an ensconcement relation by means of a base contraction operation. Finally, we study the interrelations among ensconcement-based contraction and epistemic entrenchment-based contractions and among brutal contractions and severe withdrawals.