Fermé, EduardoReis, Maurício D. L.2021-05-272021-05-272013Fermé, E., & Reis, M. D. (2013). Epistemic entrenchment-based multiple contractions. Review of Symbolic Logic, 6(3).http://hdl.handle.net/10400.13/3446In this article we present a new class of multiple contraction functions—the epistemic entrenchment-based multiple contractions—which are a generalization of the epistemic entrenchment-based contractions (Gardenfors, 1988; G ¨ ardenfors & Makinson, 1988) to the case of ¨ contractions by (possibly nonsingleton) sets of sentences and provide an axiomatic characterization for that class of functions. Moreover, we show that the class of epistemic entrenchment-based multi ple contractions coincides with the class of system of spheres-based multiple contractions introduced in Ferme & Reis (2012).engMultiple contraction functionsEpistemic entrenchment-based multiple contractionsEpistemic entrenchment-based contractionsSystem of spheres-based multiple contractions.Faculdade de Ciências Exatas e da Engenhariajournal article10.1017/S1755020313000105