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The axiom set

is a collection of terms of the form:

axiom(F1 , F2)

where F1 and F2 are fluent literals. The intuitive meaning of this axiom is that in any state where F1 is true then F2 most be true too. The use of axioms is very limited at this point in the planner. It is assumed that the ramification effects of axioms are one step only. That is, there cannot be two ground instances (i.e. replacement of variables with object symbols) of axioms such that the ground axioms are of the form axiom(f1 , f2) and axiom(f2 , f3).



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Next: The initial situation Up: The domain description Previous: The action proposition



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