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The sentential calculus using rule of inference Re
Published online by Cambridge University Press: 12 March 2014
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Axiomatizations of the sentential calculus which use Rmp (modus ponens), have been shown equivalent to axiomatizations similar in all respects except that Rmp is replaced by the less restricted rule Re (rule of excision)1:
Re. If S and (…(S⊃S') …), then (… S' …).
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- Research Article
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- Copyright © Association for Symbolic Logic 1960
References
1 Angell, R. B., On a less restricted type of rule of inference, Mind, n.s. vol. LXIX (1960).CrossRefGoogle Scholar
2 >Łukasiewicz, J. and Tarski, A., Untersuchungen über den Aussagenkalkül, Comptes Rendus des Séances de la Société des Sciences et des Lettres de Varsovie, Classe III, vol. 23 (1930), pp. 30–50.Google Scholar
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