Question: Consider alphabet = { a , b , # } and the language B = { w in | w = a n#b 2 n#a

Consider alphabet ={a, b, #} and the language B ={w in | w = a n#b 2n#a n for some n in N}.(a) Prove that B is not context-free.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Q:

Problem 3: The Thin Lens Formula The goal of this problem is to derive the "thin lens formula," which relates the location of an image, formed by a lens, to the location of the object and the focal...

Q:

State diagram for DFA Mtest 3. (12 points) To safeguard the privacy or security of a network, some software filter the IP addresses that are allowed to send content to computers on the network. The...

Q:

Find CFG ' s and Regular Grammer that generate these regular languages over the alphabet S = { a , b } : 1 . The language defined by ( aaa + b ) * 2 . The language defined by ( a + b ) * ( bbb + aaa...

Q:

For the alphabet = {a, b, c}, let language A be the set of all strings that contain at least one of each alphabet symbols. (a) Prove that this language is regular. (b) Prove that there is a subset B...

Q:

Please right sol this will help Thanks . [10 Points] For each of the following languages, give a regular expression and argue that your regular expression works. Giving a regular expression without...

Q:

Make sure this is completed in CNF -- this is for computational structures class PLEASE ANSWER PROBLEM 1 (VI) PROBLEMS 1. Find CFGs that generate these regular languages over the alphabet -a b (i)...

Q:

Find CFGs that generate the following regular languages over the alphabet = {a, b}: (i) The language defined by (aaa + b) + (ii) The language defined by (a + b) (bbb + aaa)(a + b)

Q:

3) Construct a regular expression defining each of the following languages over the alphabet {a, b}. (e) The language of all strings that do not containing the substring bb. (f) The language of all...

Q:

Which of the following sentences is a proposition? a)The smallest... Which of the following sentences is a proposition? a)The smallest perfect number is 12 b)When is the final exam? c)Do your...

Q:

1. Derive the Regular Expressions a) Language having all words that do not end at a double letter over ? = { a b} b) Even- Even language over ? = { a b} c) Language having all words that start and...

Q:

Refer to the monthly intersection accident data in Exercise 2.4. Considering an even longer record leads to a distribution for X = number of accidents in a month. Value xProbability f(x)...

Q:

Discuss innovation diffusion and use an innovation analysis to develop marketing strategy?

Q:

4 9 A potential business owner needs to convey their business idea to a prospective investor or lender in minutes. 0 1 : 0 2 1 9 Multiple Choice two five twelve

Q:

What is a current event in the last few weeks related to open economy macro? Pick an example that would shift curves and/or move exchange rates. Analyse the theory of causes or effects. Include the...