Uniform Interpolation and Propositional Quantifiers in Modal Logics

@article{Blkov2007UniformIA,
  title={Uniform Interpolation and Propositional Quantifiers in Modal Logics},
  author={Marta B{\'i}lkov{\'a}},
  journal={Studia Logica},
  year={2007},
  volume={85},
  pages={1-31}
}
  • M. Bílková
  • Published 1 February 2007
  • Philosophy
  • Studia Logica
We investigate uniform interpolants in propositional modal logics from the proof-theoretical point of view.Our approach is adopted from Pitts’ proof of uniform interpolationin intuitionistic propositional logic [15]. The method is based on a simulation of certain quantifiers ranging over propositional variables and uses a terminating sequent calculus for which structural rules are admissible.We shall present such a proof of the uniform interpolation theorem for normal modal logics K and T. It… 
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