¹ Source: wiktionary.com
Definition of Contrapositive
1. [n -S]
Lexicographical Neighbors of Contrapositive
Literary usage of Contrapositive
Below you will find example usage of this term as found in modern and/or classical literature:
1. The Principles of Science: A Treatise on Logic and Scientific Method by William Stanley Jevons (1877)
"We might similarly apply the contrapositive in many other instances. Take the
argument, " All fixed stars are self-luminous ; but some of the heavenly ..."
2. An Introductory Logic by James Edwin Creighton (1909)
"The form here derived, the converse of the obverse, has usually been denned as
the contrapositive of a given proposition, and we have so far followed this ..."
3. The Substitution of Similars: The True Principle of Reasoning, Derived from by William Stanley Jevons (1869)
"The new proposition thus obtained may be called the contrapositive of the one
from which it was derived, this being a name long applied to a similar ..."
4. An Elementary Handbook of Logic by John Joseph Toohey (1918)
"Partial contrapositive Some non-voters are Americans. ... Again, the partial
contrapositive and the contrapositive of All S is P, being both universal, ..."
5. Studies and Exercises in Formal Logic: Including a Generalisation of Logical by John Neville Keynes (1887)
"It should be observed that any proposition and its full contrapositive are
equivalent to one another; in other words, we can pass back from a contra ..."
6. Logic, Inductive and Deductive: An Introduction to Scientific Method by Adam Leroy Jones (1909)
"In the contrapositive the subject is the opposite of the original predicate, the
predicate is the original subject, and the quality of the proposition is ..."
7. A Manual of Logic by James Welton (1896)
"[Obverse] - - • [A] • [Every lazy person ii undeserving of success.] contrapositive • -
I - Some people undeserving of success are lazy, ..."
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