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

I. On the first hypothesis we may remark: first, That one is one is an identical proposition, from which we might expect that no further consequences could be deduced.

From Parmenides by Jowett, Benjamin

President Edwards himself has frequently reduced the fundamental doctrine of the Inquiry to an identical proposition.

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

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

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

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