Let A = {wtw R | w, t {0,1} * and |w| = |t|}. Prove that

Question:

Let A = {wtw^R| w, t ∈ {0,1}^* and |w| = |t|}. Prove that A is not a CFL.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Introduction to the theory of computation

ISBN: 978-0470530658

3rd edition

Authors: Michael Sipser

See More Books

Question Posted: Sep 02, 2020 04:31 AM

See More Questions

Let Y ={w| w=t 1 #t 2 # #t k for k 0, each ti 1 * , and ti t j whenever i j}. Here = {1, #}. Prove that Y is not context free.
Let = {1, #} and let Y = {w| w = x 1 #x 2 # #xk for k 0, each x i 1 * , and x i xj for i j}. Prove that Y is not regular.
Let C = {wwR| w {0,1} * }. Prove that C is not a DCFL. Suppose that when some DPDA P is started in state q with symbol x on the top of its stack, P never pops its stack below x, no matter what input...
? ?? ? Prepare Company 1's COMPLETE CASH FLOW STATEMENT for 2016 (that includes CFO, CFI, CFF) using INDIRECT approach for CFO part. Explain how to treat for accounting purposes occupation of...
Solve Problem 3y - 4 = 6y - 19
Explain the importance of maintaining complete and accurate records.
(Fill in the blanks) 1. The FASB publishes its Accounting Standards Codification (ASC) as the source of accounting and reporting guidance for _______ hospitals. 2. FASB standards _______ (lways,...
Please read the following summary of a news article regarding Unmanned Aerial Systems (UAVs) and provide a thoughtful response and whether you agree or disagree. "For this edition of current events...
Which of the following transactions would not be counted in GDP? Explain your answers. a. You buy a new pair of Lucchese Cowboy boots at the Lucchese factory in El Paso, Texas. b. You buy a vintage...
If A and B are languages, define A B = {xy| x A and y B and |x| = |y|}. Show that if A and B are regular languages, then A B is a CFL.
Consider the following CFG G: S SS | T T aT b | ab Describe L(G) and show that G is ambiguous. Give an unambiguous grammar H where L(H) = L(G) and sketch a proof that H is unambiguous.
Create the game Lights Out using a BorderLayout. Place a five-by-five grid of panels in one region, and reserve another region for a congratulatory message. Randomly set each panel in the grid to a...
The Government Accountability Office Report Regulatory Coverage Generally Exists for Financial Planners, but Consumer Protection Issues Remain provides the most current overview licensing...
What are the various forms of virtual communication used in modern organizations?
How does one choose between communication methods and handle barriers to effective communication?
What are the issues surrounding smartphones, social media, and cybersecurity confronting modern organizations?
What are the types of interpersonal communication?
The following cost graphs illustrate various types of cost behavior: For each of the following costs, identify the cost graph that best illustrates its cost behavior as the number of units produced...
Would you use the adjacency matrix structure or the adjacency list structure in each of the following cases? Justify your choice. a. The graph has 10,000 vertices and 20,000 edges, and it is...
When implementing the ArrayQueue class, we initialized f =0 (at line 5 of Code Fragment 6.10). What would happen had we initialized that field to some other positive value? What if we had initialized...
Describe how to implement the stack ADT using a single queue as an instance variable, and only constant additional local memory within the method bodies. What is the running time of the push(),...
Suppose you have a stack S containing n elements and a queue Q that is initially empty. Describe how you can use Q to scan S to see if it contains a certain element x, with the additional constraint...
Can we justify the acquisition of Peloton Interactive Inc using NPV assuming the initial investment is 10% of the total market value of the company, 5% constant growth rate for the next three years...
Mary would like to save $10,000 at the end of 5 years for a future down payment on a car. How much should she deposit at the end of each month in a savings account that pays 1.2%/a, compounded...
AA stock price is $45/share. The stock is expected to pay dividends $2.50 in the coming year. After reviewing all information, you concluded: the price one year from now will be $50/share and you...

Let A = {wtw R | w, t {0,1} * and |w| = |t|}. Prove that

Question:

Step by Step Answer:

Given language is A wtw R w t01 and w t proo...View the full answer

Introduction to the theory of computation

Students also viewed these Computer science questions