On the equivalence of strong and weak validity of rule schemes in the two-valued propositional calculus
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Publication:2530288
DOI10.1305/NDJFL/1093893943zbMath0167.00703OpenAlexW1966086274MaRDI QIDQ2530288
Publication date: 1970
Published in: Notre Dame Journal of Formal Logic (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1305/ndjfl/1093893943
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