Plurality and Conjunction
Kai von Fintel links to a new paper:
The main claims are that plural/mass denotations are built in stages within the DP, by the combined effect of number features and semantic operators associated with functional heads; that languages differ in whether the denotation of nouns is filtered for singular or plural number, and that the word and crosslinguistically denotes SET PRODUCT, an operation which, in different contexts, can mimic the behavior of intersection and union.