Complement - operations on languages, Theory of Computation

The fact that SL2 is closed under intersection but not under union implies that it is not closed under complement since, by DeMorgan's Theorem

L1 ∩ L2 = 412_lema.png

We know that the intersection of SL2 languages is also SL2. If the complement of SL2 languages was also necessarily SL2, then 412_lema.png would be SL2 contradicting the fact that there are SL2 languages whose union are not SL2.

Lemma The class of strictly 2-local languages is not closed under complement .

Posted Date: 3/22/2013 12:58:56 AM | Location : United States







Related Discussions:- Complement - operations on languages, Assignment Help, Ask Question on Complement - operations on languages, Get Answer, Expert's Help, Complement - operations on languages Discussions

Write discussion on Complement - operations on languages
Your posts are moderated
Related Questions
De?nition Deterministic Finite State Automaton: For any state set Q and alphabet Σ, both ?nite, a ?nite state automaton (FSA) over Q and Σ is a ?ve-tuple (Q,Σ, T, q 0 , F), w

We can then specify any language in the class of languages by specifying a particular automaton in the class of automata. We do that by specifying values for the parameters of the

While the SL 2 languages include some surprisingly complex languages, the strictly 2-local automata are, nevertheless, quite limited. In a strong sense, they are almost memoryless

A Turing machine is a theoretical computing machine made-up by Alan Turing (1937) to serve as an idealized model for mathematical calculation. A Turing machine having of a line of

Automata and Compiler (1) [25 marks] Let N be the last two digits of your student number. Design a finite automaton that accepts the language of strings that end with the last f


design a turing machine that accepts the language which consists of even number of zero''s and even number of one''s?

When an FSA is deterministic the set of triples encoding its edges represents a relation that is functional in its ?rst and third components: for every q and σ there is exactly one

Find the Regular Grammar for the following Regular Expression: a(a+b)*(ab*+ba*)b.

what are composition and its function of gastric juice