Peirce's contributions to possible-worlds semantics

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10 Citations (Scopus)


A century ago, Charles S. Peirce proposed a logical approach to modalities that came close to possible-worlds semantics. This paper investigates his views on modalities through his diagrammatic logic of Existential Graphs (EGs). The contribution of the gamma part of EGs to the study of modalities is examined. Some ramifications of Peirce's remarks are presented and placed into a contemporary perspective. An appendix is included that provides a transcription with commentary of Peirce's unpublished manuscript on modality from 1901.

Original languageEnglish
Pages (from-to)345-369
Number of pages25
JournalStudia Logica
Issue number3
Publication statusPublished - Apr 1 2006


  • Existential Graphs
  • Modality
  • Peirce
  • Possible-worlds semantics

ASJC Scopus subject areas

  • Logic
  • History and Philosophy of Science

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