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

Consequently the statement of this lady that some or all of the actions done in bad form shocked her is an identical proposition of the form “nothing shocks me, except, of course, the things which do, in fact, shock me”; and this statement the lady certainly did not intend to make.

From Project Gutenberg

“That, my friend,” replied Stephen, “is an identical proposition.”

From Project Gutenberg

If the writer means to say that power to choose either the one or the other of two objects is power to choose either—this is an identical proposition: it is only saying, If a thing is, it is.

From Project Gutenberg

That is my identical proposition.

From Project Gutenberg

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

From Project Gutenberg