Priest on negation

Lloyd Humberstone

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review


What conception of negation a dialetheist might have, in holding that a statement and its negation can both be true, has been the subject to considerable debate. Several of the issues in play in this area—such as the unique characterization of negation, and the interplay between contrariety and subcontrariety—are broached here by considering some positions taken on them by Graham Priest and assorted critics (in particular, Hartley Slater and Jean-Yves Béziau). Some of the more intricate points, as well as detailed discussions of commentators (including those just mentioned as well as Heinrich Wansing) on Priest are handled in explicitly labelled Digressions and in two Appendices.

Original languageEnglish
Title of host publicationGraham Priest on Dialetheism and Paraconsistency
EditorsCan Başkent, Thomas Macaulay Ferguson
Place of PublicationCham Switzerland
Number of pages57
ISBN (Electronic)9783030253653
ISBN (Print)9783030253646
Publication statusPublished - 1 Jan 2019

Publication series

NameOutstanding Contributions to Logic
ISSN (Print)2211-2758
ISSN (Electronic)2211-2766


  • Contraries and subcontraries
  • Logical relations
  • Negation
  • Paraconsistency
  • Unique characterization of connectives

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