N2 matrices are formally referred to as what?

N2 matrices are formally referred to as coupling matrices. This terminology reflects their primary purpose in systems engineering, which is to illustrate the relationships and interactions between different system elements or components. In essence, a coupling matrix provides a clear visualization of how various parts of a system interface with one another, making it easier to identify dependencies and assess the impact of changes made in one area on others.

The use of coupling matrices is particularly helpful in complex systems where numerous components interact, as it allows engineers to analyze the system holistically. By understanding these interactions, one can make informed decisions during the design, development, and integration phases of a system's lifecycle.

Other terms, while they might convey certain aspects related to systems engineering, do not accurately capture the function and definition of N2 matrices. The term "connection systems" may imply a focus on how parts link together but does not encompass the mathematical and analytical nature of N2 matrices. "Integration files" suggests a collection of documents or data related to integration activities rather than a structured representation of relationships among components. Lastly, "definition structures" does not convey the interaction aspect and lacks specificity regarding the coupling of system elements.