Examinando por Autor "Pietz, Andreas"

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    Nothing but the truth
    (Springer, 2013) Pietz, Andreas; Rivieccio, Umberto
    A curious feature of Belnap’s “useful four-valued logic”, also known as first-degree entailment (FDE), is that the overdetermined value B (both true and false) is treated as a designated value. Although there are good theoretical reasons for this, it seems prima facie more plausible to have only one of the four values designated, namely T (exactly true). This paper follows this route and investigates the resulting logic, which we call Exactly True Logic.