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Keywords:

  • Dual-intuitionistic logic;
  • Goodman's logic;
  • Nelson's logic;
  • strong negation

Abstract

Dual-intuitionistic logics are logics proposed by Czermak (1977), Goodman (1981) and Urbas (1996). It is shown in this paper that there is a correspondence between Goodman's dual-intuitionistic logic and Nelson's constructive logic N.