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

It is an identical proposition in verbal disguise, with the fault that it makes negation affirmation, passiveness action.

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

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

It is an identical proposition, which experience can neither shake nor confirm.

From An Examination of President Edwards' Inquiry into the Freedom of the Will by Bledsoe, Albert Taylor

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

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)