System of Spheres-based Multiple Contractions

Journal of Philosophical Logic 41 (1):29-52 (2012)
We propose a new class of multiple contraction operations — the system of spheres-based multiple contractions — which are a generalization of Grove’s system of spheres-based (singleton) contractions to the case of contractions by (possibly non-singleton) sets of sentences. Furthermore, we show that this new class of functions is a subclass of the class of the partial meet multiple contractions.
Keywords Belief change  Theory contraction  Multiple contraction  Possible worlds semantics  System of spheres
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DOI 10.1007/s10992-011-9197-z
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References found in this work BETA
Adam Grove (1988). Two Modellings for Theory Change. Journal of Philosophical Logic 17 (2):157-170.
André Fuhrmann (1991). Theory Contraction Through Base Contraction. Journal of Philosophical Logic 20 (2):175 - 203.

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