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Ideas for 'The Boundary Stones of Thought', 'The German Ideology' and 'On the Cosmos (lost)'

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4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

18803

Semantics for propositions: 1) validity preserves truth 2) non-contradition 3) bivalence 4) truth tables [Rumfitt]