Intuitionistic propositional logic with Galois connections

@article{Dzik2010IntuitionisticPL,
  title={Intuitionistic propositional logic with Galois connections},
  author={Wojciech I Dzik and Jouni J{\"a}rvinen and Michiro Kondo},
  journal={Log. J. IGPL},
  year={2010},
  volume={18},
  pages={837-858}
}
In this work, an intuitionistic propositional logic with a Galois connection (IntGC) is introduced. In addition to the intuitionistic logic axioms and inference rule of modus ponens, the logic contains only two rules of inference mimicking the performance of Galois connections. Both Kripke-style and algebraic semantics are presented for IntGC, and IntGC is proved to be complete with respect to both of these semantics. We show that IntGC has the finite model property and is decidable, but… 

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