Order means the arrangement of elements in relation to each other according to a particular sequence, pattern, or method. This particular sequence that defines order can be understood as some transformation or symmetry between the element’s states or over time. Ordered systems have symmetry and thus can be defined in terms of some subset of the entire pattern and a transformation that when performed will generate the other elements within the pattern. In this way order can be defined in terms of information theory and symmetries, the less the information required to describe the system the more ordered it can be said to be.
