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

But that the I which thinks, must be considered as in thought always a subject, and as a thing which cannot be a predicate to thought, is an apodeictic and identical proposition.

From The Critique of Pure Reason by Meiklejohn, John Miller Dow

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

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 Maclaren, Alexander

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

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