contraposition

Example Sentences

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While perhaps a direct contraposition to point number one, it's worth remembering that Doc/Fest is a cross-platform, multimedia festival, as well as being a haven for the factually obsessed.

From The Guardian • May 9, 2013

Paolo Rodari, who writes about the Vatican for the newspaper Il Foglio, said the episode depicted “a widening contraposition happening in the Vatican between Bertone and different clerics who do not like his politics.”

From New York Times • Jan. 27, 2012

Logicians seem to have overlooked the fact that conversion by contraposition is as applicable to the O as to the A proposition, though, when expressed in symbols, it presents a more clumsy appearance.

From Deductive Logic by Stock, St. George William Joseph

The only mode usually recognised of converting a particular negative proposition, is in the form, Some A is not B, therefore, something which is not B is A; and this is termed conversion by contraposition.

From A System of Logic: Ratiocinative and Inductive 7th Edition, Vol. I by Mill, John Stuart

Conversion, 479. of complex propositions, 709. by contraposition, 516. illative, 481. by negation, 504. per accidens, 487. simple, 486. rules of, 482.

From Deductive Logic by Stock, St. George William Joseph