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Journal of Logic and Computation Advance Access published online on February 15, 2008
Journal of Logic and Computation, doi:10.1093/logcom/exm093
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© The Author, 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Original papers

An Axiomatic Characterization of Ensconcement-Based Contraction

Eduardo FermÉ

Departamento de Matemática e Engenharias - Universidade da Madeira Campus Universitário da Penteada, 9000-390 Funchal Portugal.
E-mail: ferme{at}uma.pt

MartÍn Krevneris

Gestion-Digital, Buenos Aires, Argentina.
E-mail: mkrev{at}gestion-digital.com.ar

MaurÍcio Reis

Departamento de Matemática e Engenharias - Universidade da Madeira Campus Universitário da Penteada, 9000-390 Funchal Portugal.
E-mail: m_reis{at}uma.pt

Received 1 December 2007.


  Abstract

In this article, we propose an axiomatic characterization for ensconcement-based contraction functions, belief base functions proposed by Williams. We relate this function with other kinds of base contraction functions.

Keywords: Logic of Theory Change; Belief Bases; Base Contraction; Ensconcement


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