Show that the family of context-free languages is closed under reversal.
Show that the family of context-free languages is closed under reversal.
I am providing the image of the proof.
Show that the family of context-free languages is closed under reversal.
Q.5 Are the context-free languages closed under reversal? Answer yes or no, and explain. (Reversal means to form the language containing the reverse of every string in the original.)
Automata Question (3) Show that the family of deterministic context-free languages is not closed under union and intersection.
4. (Closure) Show that the class of context-free languages is closed under the star operation.
10. Show that the family of linear languages is not closed under concatenation. theory of computation
3. Show that the family of regular languages is closed under the given operations below The nor of two languages by nor(L, L2) = {w: w E L1 and w E L2} The cor (complementary) of two languages by cor(Li, L2) = {w: w E L1 or w E L2} a. b. 3. Show that the family of regular languages is closed under the given operations below The nor of two languages by nor(L, L2) = {w: w E L1...
1. Show that the following languages are context-free. You can do this by writing a context free grammar or a PDA, or you can use the closure theorems for context-free languages. For example, you could show that L is the union of two simpler context-free languages. (b) L {0, 1}* - {0"1" :n z 0}
1. Show that the following languages are context-free. You can do this by writing a context free grammar or a PDA, or you can use the closure theorems for context-free languages. For example, you could show that L is the union of two simpler context-free languages. (d) L = {0, 1}* - L1, where L1 is the language {1010010001…10n-110n1 : n n ≥ 1}.
Explain the answer QUESTION 8 The classes of languages P and NP are closed under certain operations, and not closed under others, just like classes such as the regular languages or context-free languages have closure properties. Decide whether P and NP are closed under each of the following operations. 1. Union. 2. Intersection. 3. Intersection with a regular language. 4. Concatenation 5. Kleene closure (star). 6. Homomorphism. 7. Inverse homomorphism. Then, select from the list below the true statement. OP...