identical proposition

American  

noun

Logic.

1. a proposition in which the subject and predicate have the same meaning, as, “That which is mortal is not immortal.”

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identical proposition British  

noun

1. logic a necessary truth, esp a categorial identity, such as whatever is triangular has three sides

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Etymology

Origin of identical proposition

First recorded in 1635–45

Example Sentences

See Examples For:

identical proposition

To render 'upright' instead of 'smooth' seems to make the statement almost an identical proposition, and is tame.

From Expositions of Holy Scripture Isaiah and Jeremiah by Alexander Maclaren

For in the New Testament it is neither an identical proposition, nor a contradiction in terms; and, as laid down by Mr Bentham, it must be either the one or the other.

From Miscellaneous Writings and Speeches — Volume 2 by Thomas Babington Macaulay, Baron Macaulay

That nothing can extend beyond its limits is an identical proposition.

From The Destiny of the Soul A Critical History of the Doctrine of a Future Life by William Rounseville Alger

If Every man is fallible, is it an identical proposition that Every man is liable to error?

From Logic Deductive and Inductive by Carveth Read

An identical proposition is one that says the same thing precisely in subject and predicate.

From English Synonyms and Antonyms With Notes on the Correct Use of Prepositions by James Champlin Fernald