|Wikimedia Commons has media related to Systems.|
A system is a set of entities[disambiguation needed], real or abstract, comprising a whole where each component interacts with or is related to at least one other component and they all serve a common objective. For the purpose of organizing articles into categories, there are four major type of system which can reasonably be expected to contain every type of system under its category tree: Physical systems, Biological systems, Social systems, and Conceptual systems.
This category has the following 14 subcategories, out of 14 total.
- ► Complex systems theory (9 C, 69 P)
- ► Rating systems (7 C, 37 P)
- ► Wikipedia books on systems (1 P)