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Material Implication

This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.

State

p ⊃ q :: ~p ∨ q.

Show

Video 142's equivalence, promoted to a rule — conditionals and disjunctions are interconvertible.

Watch for

This rule is the great unblocker: stuck with a conditional and no antecedent, convert it and work the disjunction.

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  • Nothing yet depends on this.