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 ...

Proof We will use the Pumping Lemma for Context Free Lan ...

Let Y ={w| w=t 1 #t 2 # #t k for k 0,

Question:

Let Y ={w| w=t₁#t₂# · · · #t_k for k ≥ 0, each ti ∈ 1^*, and ti ≠ t_j whenever i ≠ j}.

Here Σ = {1, #}. Prove that Y is not context free.

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 04:30 AM

See More Questions

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 (R, +, ) be a ring. If S, T1 and T2 are subrings of R, and S T1 T2, prove that S T1 or S T2.
Let T1: M22 R and T2: M22 M22 be the linear transformations given by T1 (A) = tr(A) and T2(A) = AT. (a) Find (T1 o T2) (A), where (b) Can you find (T2 o T1)(A)? Explain. A=
5.In a nut shell, when you look back over time, the power of image has always been there. Even in the prehistoric era, they used imagery to communicate, and what's even more incredible is that we are...
Solve problem u/2 - 2/3 < u/3 + 2
describe the three conditions thart must be present to categorize a lease as a financial lease
Describe the advantages and disadvantages of electronic medical records.
The total assets of the Dexter Company are $270 million, and the firms present capital structure, which follows, is considered to be optimal. Assume that there is no short-term debt. Long-term debt...
The figure shown gives the position of a car moving in the x-direction as a function of time, x(t). Four times are marked by blue squares and labeled A - D. For which times is the acceleration of the...
Volvo (www.volvo.com) and Pilkington (www.pilkington.com) are major multinational firms with operations that span the globe. Investigate these firms by visiting their Web sites, as well as...
Read the definitions of NOPREFIX(A) and NOEXTEND(A) in Problem 1.40. a. Show that the class of CFLs is not closed under NOPREFIX. b. Show that the class of CFLs is not closed under NOEXTEND. Problem...
For strings w and t, write w t if the symbols of w are a permutation of the symbols of t. In other words, w $ t if t and w have the same symbols in the same quantities, but possibly in a different...
Researchers wondered whether the size of a persons brain was related to the individuals mental capacity. They selected a sample of right-handed introductory psychology students who had SAT scores...
The signed-rank statistic can be represented as S + = 1 U 1 + 2 U 2 +.....+ n U n where U i = 1 if the sign of the (x i 0 ) with the ith largest absolute magnitude is positive (in which case i...
Show that the ratio of the Laspeyres price index to the Laspeyres quantity index is equal to the ratio of the Paasche price index to the Paasche quantity index.
Download the Statement on Standards in Personal Financial Planning Services (SSPFPS) No.1. Review the steps in the PFP process....
Jamie OConnor is a second-grade teacher in a rural area. She notices that one of her students, Bobby, consistently comes to school with bruises and cuts. When Jamie asked Bobby about the injuries, he...
There are a few situations in which accomplice liability is a legal impossibility. One who abandons his or her intent to participate in the crime may not be considered an accomplice. To succeed,...
For a major university, match each cost in the following table with the appropriate activity base. An activity base may only be used more than once. ......................Cost...
Data 9.2 on page 540 introduces the dataset Cereal, which includes information on the number of grams of fiber in a serving for 30 different breakfast cereals. The cereals come from three different...
Page 281 describes an array-based representation for implementing the positional list ADT. Give a pseudocode description of the addBefore method for that representation. |(1,BWI) (2,PVD) |(0,JFK)...
Redo the previous problem, but providing an implementation within the class LinkedPositionalList that does not create or destroy any nodes.
Suppose we want to extend the PositionalList interface to include a method, positionAtIndex(i), that returns the position of the element having index i (or throws an IndexOutOfBoundsException, if...
How does culture relate to political and security issues in the world? Please provide specific examples. 2 What are the most significant contemporary security issues in the world? How does culture...
Tree Seedlings has the following current-year purchases and sales for its only product. Units Acquired at Cost Date January 1 Activities Beginning inventory January 3 Sales February 14 February 15...
A cylindrical log is cut as shown to form a park bench. Find: a. The area of triangle OAB in m. [2] b. The volume of the log in m. [3] B 70% 40 cm 3m

Let Y ={w| w=t 1 #t 2 # #t k for k 0,

Question:

Step by Step Answer:

Proof We will use the Pumping Lemma for Context Free Lan...View the full answer

Introduction to the theory of computation

Students also viewed these Computer science questions