What is decider? - Computer Science Stack Exchange Intuitively, a decider should be a Turing machine that given an input, halts and either accepts or rejects, relaying its answer in one of many equivalent ways, such as halting at an ACCEPT or REJECT state, or leaving its answer on the output tape A similar concept is a total Turing machine, which is a machine that halts on every input
Turing Machines: What is the difference between recognizing, deciding . . . See comment on OP's answer here, then the answer by Jan Hudec : What is the difference between a TM accepting and deciding a language? I have also seen the definition of total decider to mean, the Turing machine halts on all inputs Is this all inputs in the language the Turing Machine is defined over?
computability - Show that a language is decidable iff some enumerator . . . As a result, we end up showing that the language is decidable but we do not (and cannot) algorithmically construct the decider for the language from the enumerator for the language This subtle point is the reason for the star on the problem I could not understand the rejection case in the last line in the second paragraph
ETM Undecidability - Computer Science Stack Exchange You'll need to complete a few actions and gain 15 reputation points before being able to upvote Upvoting indicates when questions and answers are useful What's reputation and how do I get it? Instead, you can save this post to reference later
Confused about definition of a non-deterministic decider Fallowing are some definitions from book quot;introduction to theory of computation quot; by sipser a nondeterministic turing machine is a decider if all its computation branches halt on all inp