proposities

Proposities is the plural of propositie, a Dutch term for a declarative statement that can be assessed as true or false. In logic, philosophy, and mathematics, a propositie denotes the content of a claim, independent of how it is expressed in words or symbols. In everyday Dutch, propositie can also mean a proposal or offer, especially in business or marketing, as in waardepropositie (value proposition) or verkooppropositie.

In mathematical and logical literature, the terms propositie and stelling are used somewhat variably. Some authors reserve propositie for a specific, provable statement that follows from axioms, while others use stelling for theorems and reserve propositie for more general claims or lemmas. In philosophical contexts, a proposition is typically the cognitive content of a sentence, something that could be true or false, not necessarily tied to a particular language or form.

The plural proposities thus covers both logical statements and practical offers. The spelling aligns with Dutch orthography; in English, the cognate is proposition and the plural is propositions. Related terms include bewering (assertion) and waardepropositie (value proposition). See also: Propositional logic, Value proposition, Propositie (linguistics).