A deduction theorem schema for deductive systems of propositional logics
Studia Logica 50 (3-4):385 - 390 (1991)
| Abstract | We propose a new schema for the deduction theorem and prove that the deductive system S of a prepositional logic L fulfills the proposed schema if and only if there exists a finite set A(p, q) of propositional formulae involving only prepositional letters p and q such that A(p, p) L and p, A(p, q) s q. | |||||||||
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