Is an undecidable language decidable?
An undecidable language may be partially decidable but not decidable. Suppose, if a language is not even partially decidable, then there is no Turing machine that exists for the respective language. Find whether the problem given below is decidable or undecidable.
What is the set of all decidable languages?
The set R is the set of all decidable languages. L ? R if L is decidable. A decision problem P is undecidable if the language L of all yes instances to P is not decidable. An undecidable language may be partially decidable but not decidable.
Are all decidable languages recursive?
All decidable languages are recursive languages and vice-versa. Recursively enumerable language (RE) – A language ‘L’ is said to be a recursively enumerable language if there exists a Turing machine which will accept (and therefore halt) for all the input strings which are in ‘L’ but may or may not halt for all input strings which are not in ‘L’.
Is accept TM a semi-decidable language?
TM to show that other languages are semi-decidable+, including ACCEPT TM. Decidable and Undecidable Languages 30-11 Behavior of Turing Machines