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Function/Meixner: basic concept next to object - one-digit function: makes individual from an individual - Function E.g. "x is a human" = property.
typeless: E.g. relation "x has the property y": not to be assigned to a function type.
Function/Meixner: E.g. Conjunction: neither property nor Relation.
Einführung in die Ontologie Darmstadt 2004