contraposition

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.

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

Conversion by contraposition may be said to rest on the following principle—   If one class be wholly contained in another, whatever is external to   the containing class is external also to the class contained.

From Deductive Logic by Stock, St. George William Joseph

As applied to disjunctive propositions conversion by contraposition consists simply in transposing the two alternatives.

From Deductive Logic by Stock, St. George William Joseph

The only mode usually recognized 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 by Mill, John Stuart