Maximality of bi-intuitionistic propositional logic

  title={Maximality of bi-intuitionistic propositional logic},
  author={Grigory K. Olkhovikov and Guillermo Badia},
  journal={J. Log. Comput.},
In the style of Lindström’s theorem for classical first-order logic, this article characterizes propositional bi-intuitionistic logic as the maximal (with respect to expressive power) abstract logic satisfying a certain form of compactness, the Tarski union property and preservation under bi-asimulations. Since bi-intuitionistic logic introduces new complexities in the intuitionistic setting by adding the analogue of a backwards looking modality, the present paper constitutes a non-trivial… 

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