contrapositive

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In the case of the I proposition the contrapositive is impossible, as infringing the main rule of conversion.

From Project Gutenberg

Every positive in thought has a contrapositive, and the positive and contrapositive are of the same kind.

From Project Gutenberg

But take the obverse of the contrapositive of both premises: All m is p; All m is s: ∴ Some s is p.

From Project Gutenberg

This appearance arises from mentally reading the E as an A proposition: but, if it were so taken, the result would be its contrapositive, and not its converse by negation.

From Project Gutenberg

Every impression felt is felt as a change or transition from something else: but it is a variation of the same impression—the something else, the contrapositive, is not entirely different.

From Project Gutenberg