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, …
Turing Machines: What is the difference between recognizing, deciding ...
Jun 30, 2019 · 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 …
turing machines - Computer Science Stack Exchange
Dec 8, 2023 · Please don't use images as main content of your post. This makes your question impossible to search and inaccessible to the visually impaired; we don't like that. Please transcribe …
complexity theory - Confused about the concept of deciding in ...
Mar 7, 2022 · In the definitions that I have seen, the only way for a (decider) TM to halt is to reach either the accepting or the rejecting state. Here is a source: Bovet, Crescenzi. Introduction to the theory of …
turing machines - Visualizing a Non Deterministic Decider - Computer ...
Further, I also know that a Decider is a TM that halts on all possible inputs. Now, my question is how can I visualize a Non determistic Decider? Does a non-determistic decider mean a TM where All the …
Show that a decidable language is not decided by a decider in a given set
Jun 11, 2020 · My qualm about this is that the question seems to imply finding a decidable language, the decider for which is not in the set of all deciders, which goes against the definition of decidability of …
Undecidability of TMs recognizing a decidable language
We're aiming to solve the $\overline {A}_ {TM}$ problem ("Does M loop forever on input w?") using a subroutine for solving the decider problem ("Is M a Turing machine with a decidable language?").
turing machines - Computer Science Stack Exchange
Nov 13, 2016 · So I can essentially build a TM that contains a list of every distinct decider turing machine of 100 states, and then compare the input to see if it matches any of these machines.
turing machines - Whats the difference between an oracle and a …
Dec 27, 2018 · This is in fact the key difference. An oracle doesn’t have an implementation, it is just a black box giving answer to any particular question (most importantly, the ones we cannot answer), …
Confused about definition of a non-deterministic decider
Jul 4, 2021 · Fallowing are some definitions from book "introduction to theory of computation" by sipser. a nondeterministic turing machine is a decider if all its computation branches halt on all inp...