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Negation is an operator. Its function is to claim that the proposition it modifies is false. In (2), for example, the speaker is claiming that the proposition that Mary went to the movies is false. In ...
F. Vandamme, ON NEGATION: AN INTERDISCIPLINARY STUDY, Logique et Analyse, NOUVELLE SÉRIE, Vol. 15, No. 57/58, NÉGATION (Mars-Juin 1972), pp. 39-101 ...
José M. Mendez, Francisco Salto, A Natural Negation Completion of Urquhart's Many-Valued Logic C, Journal of Philosophical Logic, Vol. 27, No. 1 (Feb., 1998), pp. 75-84 ...
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