A notion of information related to computation

The net result of an elementary computation process is the offspring of a new object out of certain already existing objects. In general, various prerequisite objects should exist in a workplace to enable the offspring of a given object c in the next computation step. Pursuing this view, certain very general properties of a computation process are abstracted, and the notion of abstract production system (aps) is formulated. Though very general and weak as a mathematical construct, an aps can be equipped with an extended real valued function d that behaves as information content.