Question: Theoretical of Computer Science: Resolution- Use the resolution method (including all the necessary pre-processing steps) to prove the validity of the first-order logic formula: (x)(P(x)(y)(P(y)P(f(y)))P(f(f(x))))
Theoretical of Computer Science:
Resolution- Use the resolution method (including all the necessary pre-processing steps) to prove the validity of the first-order logic formula:

(x)(P(x)(y)(P(y)P(f(y)))P(f(f(x))))
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