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

Really a definition, as such, cannot explain a thing's nature, being merely an identical proposition explaining the meaning of a word.

From Analysis of Mr. Mill's System of Logic by Stebbing, W. (William)

Reflection 5.—The foregoing Reflection is not an identical proposition.

From The Fiend's Delight by Bierce, Ambrose

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

From Logic Deductive and Inductive by Read, Carveth

If morality be the science of minimizing human misery, to say that sin brings suffering, is merely to express an identical proposition.

From Prose Masterpieces from Modern Essayists by Froude, James Anthony

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 Fernald, James Champlin