Question: [22] Show that the set K0 used in Lemma 1.7.6 on page 35 is not many-to-one reducible to the set B featured in Corollary 2.7.2
[22] Show that the set K0 used in Lemma 1.7.6 on page 35 is not many-to-one reducible to the set B featured in Corollary 2.7.2 on page 179, while B is many-to-one reducible to K0.
Comments. Hint: use Exercise 1.7.16.
K0 is m-complete, while B is simple and hence not m-complete. The set K0 is of a higher degree of unsolvability with respect to many-to-one reducibility than B.
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