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Activity for user53100‭

Type On... Excerpt Status Date
Comment Post #280348 https://math.stackexchange.com/a/1942585 has an answer (answering in the affirmative), I'm not whether it is worth posting this as a separate answer here.
(more)
over 3 years ago
Edit Post #278140 Initial revision over 3 years ago
Question Computational hardness of the uniform halting problem
How hard is the decision-problem of a plain Turing Machine halting on all inputs? I'm not sure of the terminology, but by "hard" I mean its location on the arithmetical hierarchy. It can be seen that a TM with a Halt-0 oracle (an oracle that can determine whether a plain TM halts) can co-decide th...
(more)
over 3 years ago