Bi-facial Truth: a Case for Generalized Truth Values

  • Authors:
  • Dmitry Zaitsev;Yaroslav Shramko

  • Affiliations:
  • Department of Logic, Lomonosov State University, Moscow, Russia 119899;Department of Philosophy, Kryvyi Rih National University, Kryvyi Rih, Ukraine 50086

  • Venue:
  • Studia Logica
  • Year:
  • 2013

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Abstract

We explore a possibility of generalization of classical truth values by distinguishing between their ontological and epistemic aspects and combining these aspects within a joint semantical framework. The outcome is four generalized classical truth values implemented by Cartesian product of two sets of classical truth values, where each generalized value comprises both ontological and epistemic components. This allows one to define two unary twin connectives that can be called "semi-classical negations". Each of these negations deals only with one of the above mentioned components, and they may be of use for a logical reconstruction of argumentative reasoning.