Fermé, EduardoGarapa, MarcoReis, Maurício2023-01-302023-01-302017Fermé, E., Garapa, M., & Reis, M. D. (2017). On ensconcement and contraction. Journal of Logic and Computation, 27(7), 2011-2042.http://hdl.handle.net/10400.13/4977In 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.engBelief changeBelief basesContractionEnsconcementAxiomatic characterization.Faculdade de Ciências Exatas e da Engenhariajournal article10.1093/logcom/exx008