KERML_ — Dynamic multiplicity, semantics

Multiplicity is a feature of a type (feature or classifier), with natural numbers as its type (see description of KERML-1). The math semantics for feature multiplicity (rule 5 in 8.4.3.4, Features Semantics) refers to the multiplicity metaproperty on a feature f as model element, rather than the multiplicity feature on an instance of f 's featuring type, preventing it from covering multiplicity values that change over the life of an instance, and possibly not handling constant values either.