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Ideas for 'Defending the Axioms', 'The Evolution of Logic' and 'On the Introduction of Transfinite Numbers'

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4. Formal Logic / B. Propositional Logic PL / 2. Tools of Propositional Logic / c. Derivation rules of PL

13500	Conditional Proof: infer a conditional, if the consequent can be deduced from the antecedent [Hart,WD]
	Full Idea: A 'conditional proof' licenses inferences to a conditional from a deduction of its consequent from its antecedent.
	From: William D. Hart (The Evolution of Logic [2010], 4)
	A reaction: That is, a proof can be enshrined in an arrow.