Towards the Validation of High-Level Action Descriptions from Their Low-Level Definitions

We address the problem of formally proving high level e ect de scriptions of actions from low level operational de nitions Both descriptions are expressed in a logic of actions and change with extensions for characterizing continuous change discontinuities the distinction between true and estimated values of state vari ables and the distinction between success and failure of an ac tion Both descriptions also require the use of nonmonotonicity in the logic in question The transition from operational de ni tion to e ect description furthermore involves the creation of a closure with respect to the set of possible ways that the action