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Discover LudwigThe phrase "a proposition is a" is correct and usable in written English.
You can use it when defining or explaining what a proposition is in a philosophical, mathematical, or logical context.
Example: "In logic, a proposition is a statement that can be either true or false."
Alternatives: "a statement is a" or "an assertion is a".
Exact(19)
In some respects, this view is not so far from — though much more thoroughly developed than — Wittgenstein's view in the Tractatus that "a proposition is a propositional sign in its projective relation to the world" (3.12).
Such a proposition is a picture of a state of affairs.
The degree of validity of a proposition is a number from the closed interval [0,1].
A proposition is "a single predication about a single subject" (SR 6 169a8).
Being a proposition is a property of (i), but is not a constituent of (i).
Let us call the set of possible worlds W. A proposition is a set of possible worlds.
Similar(41)
Surely any proposition, whether or not it is true, is identical with some fact or other given that a proposition is an arrangement of entities of the appropriate sort.
The idea is that, while consideration of a proposition is an act, and therefore can fail to be performed intelligently can fail to be manifestation of know-how manifestation of a bit of know-how manifestationan act.
A proposition is an idea, concept or statement with inherent meaning and we have reported the propositions as an integral component to the narrative and thematic analysis.
The propositional negation of a true proposition is a false proposition.
"Anyone who considers racing for the America's Cup isn't a business proposition is a bloody fool," Bond replied.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com