## Nomenclature and Definitions  
* a global multi-organizational system, encompassing organizations distributed geographically across one or more countries. It features corporate senior management overseeing activities that go beyond national borders.
* System of Systems is a conglomerate of independent constituent systems (CSs) integrated into a larger system to deliver unique capabilities and behaviors unattainable individually. Typically, this is global capability and behavior, whose realization necessitates a corresponding global organizational structure. SoS carries distinct attributes and characteristics necessitating technological and organizational addressable.
* Constituent System is an autonomous system with its development, management goals, and resources, contributing to the unique capability of the SoS through interaction. A CS can be a part of one or more SoS. ISO/IEC/IEEE 21839:2019 [4].
* Global Quality Management System, which refers to QMS tailored for a G-organization.
* refers to G-QMS in G-organizations operating in the field of occupations (sectors) of SoS.
* refers to the first supra entity of G-QMS in Sectors of SoS, rooted in the multi-organizational structures of the G-organization. The G-organization could either be a main-contractor (or concessionaire) of a SoS project or a contractor of one or more CSs in a SoS project, functioning as a global company in one of the SoS sectors.
* refers to the second supra entity of G-QMS in Sectors of SoS, a designated definition that represents the G-QMS for the SoS project, a temporary entity established with a special purpose to provide the quality management for the SoS project. It is of higher order in both scope and complexity and, consequently, integrates new quality management concepts.
* denotes the corporate senior management entity of the G-QMS. Named for the G-QMS CORE of the G-QMS of G-Org. of SoS.
* denotes the corporate senior management entity of the G-QMS in SoS.
* denotes a QMS entity of Quality Project Management of project X, located in G-QMS of G-Org. of SoS.
* denotes a QMS entity for domain-wide Subcontracting and Procurement, located in G-QMS of G-Org. of SoS.
* denotes a QMS entity serving as an interface entity, defined by quality management principles, and aligned with the local functionality where it is situated in the G-QMS structure.
* denotes the QMS of the CS, which is based on the QMS of its organization, located in G-QMS in SoS. Each CS in a specific SoS is traceable, when for a certain CS\({}_{\text{S}_{\text{Y}}}\) it is QMS\({}_{\text{CS}_{\text{Y}}}\).
* denotes a QMS entity, located in G-QMS in SoS, for the integrated SoS engineering function of the Combination and Integration (C&I) stage, and acts as a multi-interfaces hub among all the CSs. designates a QMS\({}_{\text{int}}\) located in G-QMS in SoS, which represents the QMS interface between the QMS\({}_{\text{CS}}\) and the QMS\({}_{\text{integ}}\). For the particular CS\({}_{\text{S}_{\text{Y}}}\) it is QMS\({}_{[\text{integ.CS}_{\text{Y}}]}\).
* denotes a QMS entity of local organization unit of the SoS project client, located in G-QMS in SoS. denotes a QMS entity of local organization unit for expert role of M&C in a certain SoS project X, located in G-QMS in SoS.  
SoS QMS T&C denotes a QMS entity for the SoS project validation stage, located in G-QMS in SoS. a structural element in the model referring to the equilibrium position between two interface entities. The proximity of \(\mathrm{B_{P}}\) to one of the two interfacing entities denotes the dominance of that entity in influencing the common interface. The variable locations of \(\mathrm{B_{P}}\) across the scale continuum are a factor producing heterogeneity in the G-QMS structure.