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Ideas for 'Commentary on 'De Anima'', 'Negation' and 'Necessity, Essence and Individuation'

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5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

18783	Many-valued logics lack a natural deduction system [Mares]
	Full Idea: Many-valued logics do not have reasonable natural deduction systems.
	From: Edwin D. Mares (Negation [2014], 1)