Representing and Reformulating Diagonalization Methods

Finding an appropriate representation of planning operators is crucial for theorem provers that work with proof planning. We show a new representation of operators and demonstrate how diagonalization can be represented by operators. We explain how a diagonalization operator used in one proof-plan can be analogically transferred to an operator used in another proof-plan. Finally, we find an operator that is common to all the proof-plans and thus might be considered as the Diagonal Method.