ISO 18629-12:2005 (R2025)

ISO 18629-12:2005 provides a representation of the concepts that belong to the outer core of the language, through a set of axioms and definitions. These axioms provide an axiomatization of the semantics for terminology in the ISO 18629 Outer core. The following are within the scope of ISO 18629-12:2005: the aggregation of activities and sub-activities;discrete activities and state;constraints on the occurrence of activities;concurrency for primitive activities;complex activities;occurrences of complex activities.