Question: 11.4 Given the logic program p q(x,x) gx. f(a)), and the goal clause -, prove that there is a refutation if and only if the

11.4 Given the logic program p q(x,x) gx. f(a)), and the

11.4 Given the logic program p q(x,x) gx. f(a)), and the goal clause -, prove that there is a refutation if and only if the occurs- check is omitted. Show that omitting the occurs-check invalidates the soundness of SLD-resolution

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