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

The dictum de omni not the foundation of reasoning, but a mere identical proposition 191 3.

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

A practical law which I recognise as such must be qualified for universal legislation; this is an identical proposition and, therefore, self-evident.

From The Critique of Practical Reason by Abbott, Thomas Kingsmill

Unquestionably:—but this is an identical proposition: for an object of desire means merely a thing which a man will procure if he can.

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

As regards Obligatory Morality, this seems at first sight an identical proposition; morality is another name for law and sovereignty.

From Moral Science; a Compendium of Ethics by Bain, Alexander

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 Alger, William Rounseville