Kleenes theorem, Theory of Computation

All that distinguishes the de?nition of the class of Regular languages from that of the class of Star-Free languages is that the former is closed under Kleene closure while the latter is closed only under complement. Since the Star-Free languages are exactly the LTO languages which are a subclass of the Recognizable languages and the class of Recognizable languages is closed under union, concatenation and Kleene closure, it follows that every Regular language is Recognizable.

Posted Date: 3/21/2013 1:20:16 AM | Location : United States







Related Discussions:- Kleenes theorem, Assignment Help, Ask Question on Kleenes theorem, Get Answer, Expert's Help, Kleenes theorem Discussions

Write discussion on Kleenes theorem
Your posts are moderated
Related Questions
When we say "solved algorithmically" we are not asking about a speci?c programming language, in fact one of the theorems in computability is that essentially all reasonable program

The k-local Myhill graphs provide an easy means to generalize the suffix substitution closure property for the strictly k-local languages. Lemma (k-Local Suffix Substitution Clo

a) Let n be the pumping lemma constant. Then if L is regular, PL implies that s can be decomposed into xyz, |y| > 0, |xy| ≤n, such that xy i z is in L for all i ≥0. Since the le

build a TM that enumerate even set of even length string over a

conversion from nfa to dfa 0 | 1 ___________________ p |{q,s}|{q} *q|{r} |{q,r} r |(s) |{p} *s|null |{p}

Differentiate between DFA and NFA. Convert the following Regular Expression into DFA. (0+1)*(01*+10*)*(0+1)*. Also write a regular grammar for this DFA.

One of the first issues to resolve, when exploring any mechanism for defining languages is the question of how to go about constructing instances of the mechanism which define part

Suppose A = (Q,Σ, T, q 0 , F) is a DFA and that Q = {q 0 , q 1 , . . . , q n-1 } includes n states. Thinking of the automaton in terms of its transition graph, a string x is recogn


#Your company has 25 licenses for a computer program, but you discover that it has been copied onto 80 computers. You informed your supervisor, but he/she is not willing to take an