Full Idea
The semantic value of a determiner (an adjective) is a function from semantic values to nouns to semantic values of full noun phrases.
Gist of Idea
An adjective contributes semantically to a noun phrase
Source
Thomas Hofweber (Number Determiners, Numbers, Arithmetic [2005], §3.1)
Book Reference
-: 'Philosophical Review 114' [Phil Review 2005], p.187
A Reaction
This kind of states the obvious (assuming one has a compositional view of sentences), but his point is that you can't just eliminate adjectival uses of numbers by analysing them away, as if they didn't do anything.