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Let PF = {M,(-) i N} be the set of partial, computable functions. For any subset, S PF, let PROG(S)= {i M:(-)ES} be the set
Let PF = {M,(-) i N} be the set of partial, computable functions. For any subset, S PF, let PROG(S)= {i M:(-)ES} be the set of programs of TM's that compute partial functions in S. Suppose that 0 S PF. Prove that PROG (S) is not recursive. In particular, let be the empty partial function, i.e., the function that is defined nowhere. Prove the following: (a) If0 E S then ATM (b) If S then ATM PROG(S). PROG (S). Let PF = {M,(-) i N} be the set of partial, computable functions. For any subset, S PF, let PROG(S)= {i M:(-)ES} be the set of programs of TM's that compute partial functions in S. Suppose that 0 S PF. Prove that PROG (S) is not recursive. In particular, let be the empty partial function, i.e., the function that is defined nowhere. Prove the following: (a) If0 E S then ATM (b) If S then ATM PROG(S). PROG (S)
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