Question: Use conditional proof or indirect proof and the eighteen rules of inference to establish the truth of the following tautologies.

Use conditional proof or indirect proof and the eighteen rules of inference to establish the truth of the following tautologies.

PD[(PQ) Q]

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Conditional Proof Assume P This is our assumption for the conditional proof Assume P Q Within the scope of the assumption P we make a further assumpti... View full answer

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