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We present a combination of raising, explicit variable dependencyrepresentation, the liberalized delta-rule, and preservation of solutions forfirst-order deductive theorem proving. Our main motivation is to provide thefoundation for our work on inductive theorem proving, where the preservation ofsolutions is indispensable.

Full First-Order Sequent and Tableau Calculi With Preservation of Solutions and the Liberalized delta-Rule but Without Skolemization