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The process of removing all the existential quantifiers from a formula is known as Skolemization. The result is a formula in Skolem normal form that is equivalent in computational complexity to the original. This Demonstration shows the rewriting process of a Skolemization step by step for all general cases up to three quantifier alternations and seven variables or constants.
Contributed by: Hector Zenil (March 2011)
Open content licensed under CC BY-NC-SA
Wolfram Demonstrations Project
Published: March 7 2011