A set of transitions (Ashby) from the possible
states of a
system to their respective successors. In whatever
language a transformation is stated, it should spell out the set of operands or states to which the transformation applies (
see domain ) and the set of transforms which result from applying that transformation (
see range ). A mathematical
function, e.g., y=f(x), is one form of transformation, a
code, a transition matrix, a causal network, a Petri-graph and a set of
rewrite rules are others. (
Krippendorff )
