安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Recognizable vs Decidable - Mathematics Stack Exchange
A language is Recognizable iff there is a Turing Machine which will halt and accept only the strings in that language and for strings not in the language, the TM either rejects, or does not halt at all Note: there is no requirement that the Turing Machine should halt for strings not in the language
- prove Turing recognizable - Mathematics Stack Exchange
Prove that the complement of L is Turing-recognizable I know the definition of Turing recognizable but when it comes to make an example it is really difficult for me In Sipser's book he only proof that ATM is Turing recognizable but it is kind of abstract for me What I have done for this question is (I am not sure at all)
- Show the projection of decidable language is Turing-recognizable
Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
- Simple concrete example of a language that is Turing recognizable but . . .
The set of string encodings of instances of the Post Correspondence Problem that have matches is a language that is recognizable but not decidable, as discussed in Sipser's Introduction to the Theory of Computation, Third Edition, chapter 5, pages 227-233 The discussion includes a proof of undecidability by reduction from the language of
- proof verification - Proving a language is not recognizable . . .
$\begingroup$ Indeed, the main idea here is the fact that the recognizable languages are closed under union, since their recognizers can be run in parallel $\endgroup$ – Jens Bossaert Commented May 27, 2015 at 15:45
- if A is turing-recognizable, and A is mapping reducible to complement . . .
Tour Start here for a quick overview of the site
- computability - Is this undecidable language recognizable . . .
Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
- Is F decidable, Turing-recognizable, co-Turing-recognizable
Stack Exchange Network Stack Exchange network consists of 183 Q A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers
|
|
|