Square of Opposition (Part 1): Contrary (See links below for more video lectures in Logic)

Square of opposition is the relationship between and among the four types of categorical propositions. There are four types of relations in the square of opposition, namely, 1) Contrary, 2) Subcontrary, 3) Subalternation, and 4) Contradiction.

Full transcript of this video is available at:
https://www.stuvia.com/doc/1214522/square-of-opposition-categorical-logic

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