This is a preview. Log in through your library . Abstract We investigate, for several modal logics but concentrating on KT, KD45, S4 and S5, the set of formulas B for which ̅B is provably equivalent ...
This is a preview. Log in through your library . Abstract A propositional system of modal logic is second-order if it contains quantifiers ∀p and ∃p, which, in the standard interpretation, are ...
Logic is among the oldest and most foundational of the university disciplines. The goal is to equip students with most general possible framework for sound and rigorous reasoning — one that works ...
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