Logic Lectures

Chapter 6 of 11  ·  Part 2: Expressing Truth

Opposition and Equivalence

6.1  Three Kinds of Opposition

6.2  Subalternates and the Square of Opposition

6.3  Equivalent Propositions

← Chapter 5: Judgments and Propositions

Chapter 7: The Categorical Syllogism →

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Mark Grannis teaches logic and history at The Heights School in Potomac, Maryland. He is the author of The Reasonable Person: Traditional Logic for Modern Life and its Teacher Supplement.

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