<p>In this paper, I introduce a modal logic CS5, an expansion of the non-connexive propositional classical logic with modalities with a tweaked falsification condition, thereby rendered a connexive modal logic. The logic is defined with a hyper-sequent calculus, properly modified from that of classical S5.</p>

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Another Look at Modality and Connexivity

  • Nissim Francez

摘要

In this paper, I introduce a modal logic CS5, an expansion of the non-connexive propositional classical logic with modalities with a tweaked falsification condition, thereby rendered a connexive modal logic. The logic is defined with a hyper-sequent calculus, properly modified from that of classical S5.