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The Logic Of Belief Persistency

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  • Giacomo Bonanno
  • Pierpaolo Battigalli

    (Department of Economics, University of California Davis)

Abstract

The interaction bietween knowledge and belief in a temporal context is analyzed. An axiomatic formulation and semantic characterization of the principle of belief persistency implied by the standard conditionalization rule are provided. This principle says that an individual does not change her mind unless new evidence forces her to do so. It is shown that if beliefs are conscious (or stateindependent) and satisfy negative introspection then the principle of persistency of beliefs is characterized by the following axiom schema: the individual believes that 9 at date t if and orilly if she believes at date t that she will believe that 4 at date t+l.

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Bibliographic Info

Paper provided by University of California, Davis, Department of Economics in its series Working Papers with number 9518.

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Length: 27
Date of creation: 13 Jul 2004
Date of revision:
Handle: RePEc:cda:wpaper:95-18

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Cited by:
  1. Matthew Ryan, 2001. "Capacity Updating Rules and Rational Belief Change," Theory and Decision, Springer, vol. 51(1), pages 73-87, August.
  2. Dov Samet, 1999. "Bayesianism without Learning," Game Theory and Information 9902004, EconWPA.
  3. Giacomo Bonanno, 2003. "The Logic Of Prediction," Working Papers 9812, University of California, Davis, Department of Economics.
  4. Giacomo Bonanno & Klaus Nehring, . "Intersubjective Consistency Of Knowledge And Belief," Department of Economics 98-03, California Davis - Department of Economics.
  5. Giacomo Bonanno, 2005. "A simple modal logic for belief revision," Working Papers 517, University of California, Davis, Department of Economics.
  6. Hans Hvide, 1999. "Bounds to Memory Loss," Theory and Decision, Springer, vol. 46(1), pages 1-21, February.
  7. Giacomo Bonanno & Pierpaolo Battigalli, 2003. "Recent Results On Belief, Knowledge And The Epistemic Foundations Of Game Theory," Working Papers 9814, University of California, Davis, Department of Economics.

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