Let A/B = {w| wx A for some x B}. Show that if A is

Question:

Let A/B = {w| wx ∈ A for some x ∈ B}. Show that if A is context free and B is regular, then A/B is 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 04:22 AM

See More Questions

Let X ¼ Bin(n, p). a. Show that if x is an integer between 1 and n inclusive, then b. Show that if X ¼ Bin(n, p), the most probable value for X is the greatest integer less than or...
Let X ¼ Bin(n, p). a. Show that if x is an integer between 1 and n inclusive, then b. Show that if X ¼ Bin(n, p), the most probable value for X is the greatest integer less than or...
Let X ¼ Poisson(Î»). a. Show that if x is a positive integer, then b. Show that if X ¼ Poisson(Î»), the most probable value for X is the greatest integer less...
In a recent survey, 80% of the community favored building a police substation in their neighborhood. If 20 citizens are chosen, what is the mean and standard deviation for the number favoring the...
Solve Problem -2x + 8 < 4
As a support services worker, you may be tasked with not only assisting your assigned client but also the members of the community in which your client will reside. You will also be a part of case...
Discuss the importance of genetic markers.
A TiW layer is deposited on a substrate using a sputtering tool. Table 6E.14 contains layer thickness measurements (in angstroms) on 20 subgroups of four substrates. (a) Setup x and R control charts...
ducksRus sells a duck call having a contribution margin of $5. The president foresees sales up to 100,000 units in the coming period. The company's fixed costs for the period are $275,000. a. What is...
The proton and 13C NMR spectra of a compound of formula C4H11N are shown here. Determine the structure of this amine, and give peak assignments for all of the protons in the structure. 200 180 160...
Let CFG G be the following grammar. S aSb | bY | Y a Y bY | aY | Give a simple description of L(G) in English. Use that description to give a CFG for L(G), the complement of L(G).
Let = {a,b}. Give a CFG generating the language of strings with twice as many as as bs. Prove that your grammar is correct.
Break the class into small groups of three to five students. Have students read the discussion questions and discuss their answers within their groups. Students should be prepared to provide...
What are the benefits of deregulation of transport markets? Why does such deregulation sometimes not work out quite as planned?
Mismatch between personality and organization may lead to ___________. Confusion and chaos Loss of interest by members in organization Low morale and job satisfaction All of the above
Highlight the importance of these areas in both manufacturing and services contexts.
Do you think organizational culture plays an important role in the success or failure of a firm? If so, why?
Organizational culture: It refers to a set of beliefs, values, and attitudes shared by everyone in the organization. It refers to the way in which organizations are managed. Both of the above None
Willis Products Inc. uses the total cost concept of applying the cost-plus approach to product pricing. The costs of producing and selling 200,000 units of medical tablets are as follows: Variables...
An educational researcher devised a wooden toy assembly project to test learning in 6-year-olds. The time in seconds to assemble the project was noted, and the toy was disassembled out of the childs...
Although keys in a map are distinct, the binary search algorithm can be applied in a more general setting in which an array stores possibly duplicative elements in nondecreasing order. Consider the...
Describe how to perform a removal from a hash table that uses linear probing to resolve collisions where we do not use a special marker to represent deleted elements. That is, we must rearrange the...
Consider the goal of adding entry (k,v) to a map only if there does not yet exist some other entry with key k. For a map M (without null values), this might be accomplished as follows. if (M.get(k)...
China's giant property developer Country Garden has been declared in default on its debt after failing to make a bond repayment by a final deadline of October 18. A panel of global banks and...
Write a classification essay in 3 rd person that you can describe clearly and cleverly. Have a clear thesis in the introduction that clearly list their classification categories.
Why college are important?

Let A/B = {w| wx A for some x B}. Show that if A is

Question:

Step by Step Answer:

Introduction to the theory of computation

Students also viewed these Computer science questions