On Generalizing the AGM Postulates

Giorgos Flouris, Dimitris Plexousakis, Grigoris Antoniou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Citations (Scopus)


The AGM theory is the dominating paradigm in the field of belief change but makes some non-elementary assumptions which disallow its application to certain logics. In this paper, we recast the theory by dropping most such assumptions; we determine necessary and sufficient conditions for a logic to support operators which are compatible with our generalized version of the theory and show that our approach is applicable to a broader class of logics than the one considered by AGM. Moreover, we present a new representation theorem for operators satisfying the AGM postulates and investigate why the AGM postulates are incompatible with the foundational model. Finally, we propose a weakening of the recovery postulate which has several intuitively appealing properties.

Original languageEnglish
Title of host publicationProceedings of the 2006 conference on STAIRS 2006
Subtitle of host publicationProceedings of the Third Starting AI Researchers' Symposium
EditorsLoris Penserini, Pavlos Peppas, Anna Perini
PublisherIOS Press BV
Number of pages12
ISBN (Print)9781586036454, 1586036459
Publication statusPublished - 23 May 2006
Externally publishedYes
Event3rd European Starting AI Researchers Symposium - Trento, Italy
Duration: 23 May 200623 May 2006
Conference number: 3

Publication series

NameFrontiers in Artificial Intelligence and Applications
ISSN (Print)0922-6389
ISSN (Electronic)1879-8314


Conference3rd European Starting AI Researchers Symposium
Abbreviated titleSTAIRS 2006


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