Introduction: Shades of partitivity: Formal and areal properties

At the heart of this special issue are partitive elements (i. e., partitive articles, partitive pronouns, and partitive case markers) which can express different “shades” of partitivity, namely true partitivity, pseudopartitivity, or indefiniteness, that is, the absence of a part-whole relation in the meaning, in contrast to (pseudo)partitivity. Since these partitive elements express (at least) two such notions, as they can be truly partitive but often are not, the questions around partitivity are complex, interrelated and challenging. This special issue, with a strong and wide crosslinguistic (typological) coverage, deals with two overarching topics: first, the geographical distribution of partitive elements and the identification of potential instances of language contact, and, second, sometimes in combination with the first topic, the formal description and explanation of different partitive constructions.