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phoebe.lou phoebe.lou
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“(~ O ∙ B) ⊃ (B v E), (D ≡ B) ⊃ (~ O ∙ B) ∴ (D ≡ B) ⊃ (BvE)” isa

▸ modus tollens

▸ modus ponens

▸ contraposition

▸ hypothetical syllogism

▸ disjunctive syllogism
Textbook 

How to Think Logically


Edition: 2nd
Authors:
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bwhurdbwhurd
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hypothetical syllogism

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