School of Historical and Philosophical Studies - Research Publications

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    Truth values and proof theory
    Restall, G (Springer Science and Business Media LLC, 2009-07-01)
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    Constant domain quantified modal logics without Boolean negation
    RESTALL, GA (Victoria University of Wellington, 2005)
    This paper provides a sound and complete axiomatisation for constant domain modal logics without Boolean negation. This is a simpler case of the difficult problem of providing a sound and complete axiomatisation for constant-domain quantified relevant logics, which can be seen as a kind of modal logic with a twoplace modal operator, the relevant conditional. The completeness proof is adapted from a proof for classical modal predicate logic (I follow James Garson’s presentation of the completeness proof quite closely [10]), but with an important twist, to do with the absence of Boolean negation.
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    MODAL MODELS FOR BRADWARDINE'S THEORY OF TRUTH
    Restall, G (CAMBRIDGE UNIV PRESS, 2008-08)