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Translation of first order formulas into ground formulas via a completion theory. (English) Zbl 1436.03100
Summary: A translation technique is presented which transforms a class of First Order Logic formulas, called Restricted formulas, into ground formulas. For the formulas in this class the range of quantified variables is restricted by Domain formulas.
If we have a complete knowledge of the predicates involved in the Domain formulas their extensions can be evaluated with the Relational Algebra and these extensions are used to transform universal (respectively existential) quantifiers into finite conjunctions (respectively disjunctions).
It is assumed that the complete knowledge is represented by Completion Axioms and Unique Name Axioms à la Reiter. These axioms involve the equality predicate. However, the translation allows to remove the equality in the ground formulas and for a large class of formulas their consequences are the same as the initial First Order formulas. This result open the door for the design of efficient deduction techniques.

##### MSC:
 03B35 Mechanization of proofs and logical operations 68T27 Logic in artificial intelligence 68V20 Formalization of mathematics in connection with theorem provers
SOLAR
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##### References:
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