Relevant Reasoners in a Classical World

Igor Sedlár, Pietro Vigiani

Research output: Contribution to Book/Report typesConference contributionpeer-review

Abstract (may include machine translation)

We develop a framework for epistemic logic that combines relevant modal logic with classical propositional logic. In our framework the agent is modelled as reasoning in accordance with a relevant modal logic while the propositional fragment of our logics is classical. In order to achieve this feature, we modify the relational semantics for relevant modal logics so that validity in a model is defined as satisfaction throughout a set of designated states that, as far as propositional connectives are concerned, behave like classical possible worlds. The main technical result of the paper is a modular completeness theorem parametrized by the relevant modal logic formalizing the agent’s reasoning.

Original languageEnglish
Title of host publicationAdvances in Modal Logic, AiML 2022
EditorsDavid Fernandez-Duque, Alessandra Palmigiano, Sophie Pinchinat
PublisherCollege Publications
Pages697-717
Number of pages21
ISBN (Electronic)9781848904132
StatePublished - 2022
Externally publishedYes
Event14th Conference on Advances in Modal Logic, AiML 2022 - Rennes, France
Duration: 22 Aug 202225 Aug 2022

Publication series

NameAdvances in Modal Logic
Volume14

Conference

Conference14th Conference on Advances in Modal Logic, AiML 2022
Country/TerritoryFrance
CityRennes
Period22/08/2225/08/22

Keywords

  • Epistemic logic
  • logical omniscience
  • non-normal worlds
  • relevant logic

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