Consider the following CFG G: S SS | T T aT b | ab Describe

Question:

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.

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 G = (V,,R, hSTMTi) be the following grammar. G is a natural-looking grammar for a fragment of a programming language, but G is ambiguous. a. Show that G is ambiguous. b. Give a new unambiguous...
Let C = {G, x| G is a CFG x is a substring of some y L(G)}. Show that C is decidable. An elegant solution to this problem uses the decider for E CFG .
Show that the problem of determining whether a CFG generates all strings in 1 * is decidable. In other words, show that {G| G is a CFG over {0,1} and 1 * L(G)} is a decidable language.
1) What are the implications of CICs approach to staffing project teams? Is the company using them as training grounds for talented fast-trackers or as dumping grounds for poor performers? 2) How...
Solve Problem -3(4 - x) = 5 - (x + 1)
xyz inc. currently has 5 million shares outstanding at a market price of 13 per share . xyz inc declares a 1 for 4 stock dividend. how many shares will be outstanding after the dividend is paid?...
Describe the importance and contents of medical records.
Staley Toy Co. makes toy flutes. Two manufacturing overhead application bases are used; some overhead is applied on the basis of machine hours at a rate of $7.50 per machine hour, and the balance of...
8f Find error propagation. Use: f include the units in your answer. == 1 F delf delf delf {[(delxx] + [(dely) 6y] + [(12)z]} to solve. Be sure to delz
Consider the relation REFRIG(MODEL#, YEAR, PRICE, MANUF_PLANT, COLOR), which is abbreviated as REFRIG(M, Y, P, MP, C), and the following set of F of functional dependencies: F={M -> MP, {M,Y} -> P,...
Let A = {wtw R | w, t {0,1} * and |w| = |t|}. Prove that A is not a CFL.
Let = {0,1} and let B be the collection of strings that contain at least one 1 in their second half. In other words, B = {uv| u * , v * 1 * and |u| |v|}. a. Give a PDA that recognizes B. b....
Define in words the union of two events?
How can one engage in effective cross-cultural communication in organizations?
Do you agree that demonstrating passion is a good predictor of a great job candidate worthy of being considered during the hiring process? Why or why not? How important are passion and commitment...
Judy Smart is a 17-year-old high school junior. One Saturday night, she is drinking beer with a number of her high school friends in the basement of her home. Judys parents, Bob and Mary Smart, are...
Can you think of any barriers that impacted communication effectiveness in this situation? How might one attempt to alter how they communicate to address or eliminate any of these barriers?
Compare and contrast the communication styles during the role-playing exercise. What was unique about them? How effective or ineffective was the communication of Blake and Ada in both simulations?
Name the following graph and identify the items represented by the letters (a) through (f). Operating Profit (Loss) 300,000r $200,000 $100,000 (100,000) $(200,000) $(300,000) 1,000 2,000 3,000 4,000...
Find the image of x = k = const under w = 1/z. Use formulas similar to those in Example 1. y| y = 0 -21 -2 -1 -1, /1 12 T -1 -1 y= -2 x =0
Alice has three array-based stacks, A, B, and C, such that A has capacity 100, B has capacity 5, and C has capacity 3. Initially, A is full, and B and C are empty. Unfortunately, the person who...
Suppose you have three nonempty stacks R, S, and T. Describe a sequence of operations that results in S storing all elements originally in T below all of Ss original elements, with both sets of those...
Show how to use the transfer method, described in Exercise R-6.4, and two temporary stacks, to replace the contents of a given stack S with those same elements, but in reversed order.
A consultant advises that a fund pays out $100,000 at the end of 5 years. Provided $12,000 is invested in the fund at the start of each year, beginning immediately and continuing up to and including...
Durco Automotive needs a $2 million balance in its contingency fund 3 years from now. The chief financial officer (CFO) wants to know how much to deposit now into Durco's high-yield investment...
3. Create a chart for gross margin less R&D and capital costs calculations. a. Calculate gross margin less R&D and capital costs for options A and B. b. Graph total gross margin less R&D and capital...

Consider the following CFG G: S SS | T T aT b | ab Describe

Question:

Step by Step Answer:

Introduction to the theory of computation

Students also viewed these Computer science questions