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9 Cards in this Set
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- Back
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When are two statements contrary?
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Two statements are contrary if and only if they can both be false but cannot both be true.
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When are two statements subcontraries?
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Two statements are subcontraries if and only if both can be true but both cannot be false.
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Tell me about the relationship of subimplication.
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Subimplication is the relationship between a universal and particular statement of the same quality, in which the truth of the universal necessitates the truth of the particular.
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Tell me about the relationship of subimplication in the square of opposition.
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Subimplication is the relationship from A to I statements, and E to O statements.
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Tell me about the relationship of contrariety in the square of opposition.
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A and E statements have a relationship of contrariety.
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Tell me about the relationship of subcontrariety in the square of opposition.
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I statements are subcontrary to O statements, and O statements are subcontrary to I statements.
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Tell me about the relationship of subimplication in the square of opposition.
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Subimplication is the relationship from A to I statements and E to O statements.
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Tell me about the relationship of superimplication.
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Sumperimplication is the relationship between a universal and particular statement of the same quality, in which the falsity of the particular necessitates the falsity of the universal. Superimplication is the implication of falsity.
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Tell me about the relationship of superimplication in the square of opposition.
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A relationship of superimplication exists from I to A statements, and from O to E statements.
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