Let A = {R, S| R and S are regular expressions and L(R) L(S)}. Show that

Question:

Let A = {〈R, S〉| R and S are regular expressions and L(R) ⊆ L(S)}. Show that A is decidable.

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 04:40 AM

See More Questions

Let ALLDFA = {A| A is a DFA and L(A) = * }. Show that ALLDFA is decidable.
Consider the problem of determining whether a DFA and a regular expression are equivalent. Express this problem as a language and show that it is decidable.
Let PREFIX-FREE REX = {R| R is a regular expression and L(R) is prefix-free}. Show that PREFIX-FREEREX is decidable. Why does a similar approach fail to show that PREFIX FREE CFG is decidable?
2. A magazine printer is considering taking on a new weekly publication. The company's financial officer has researched and determined costs and a committee of upper management personnel are deciding...
Use maximum likelihood to estimate the rate Î» from the waiting times for type b. Compare the support for the null hypothesis that Î» = 1.0 with the support for the maximum...
Apply the scientific method by developing a null and an alternative hypothesis that provides potential answers to the research question. What amount and intensity of exercise is likely to relieve...
Describe the trial process.
1. What is your evaluation of the ethics of domain-name companies earning commissions when people insert ordinary names into their Internet browser? 2. What about the ethics of Google and Yahoo!...
The Righter Shoe Store Company prepares monthly financial statements for its bank. The November 30 and December 31, 2024, trial balances contained the following account information: Supplies Prepaid...
Suppose that in a certain year, it was reported that the variance in GMAT scores was 14,670. At a recent summit, a group of economics professors met to discuss the GMAT performance of undergraduate...
Let A = {M| M is a DFA that doesnt accept any string containing an odd number of 1s}. Show that A is decidable.
Let = {0,1}. Show that the problem of determining whether a CFG generates some string 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.
The personnel director for Electronics Associates developed the following estimated regression equation relating an employee's score on a job satisfaction test to his or her length of service and...
In a cylindrical chamber that initially has a volume of $2.25 \mathrm{~L}$, a sample of helium gas is at equilibrium at $3.20 \mathrm{~atm}$ and $85.0^{\circ} \mathrm{C}$. The gas is slowly...
A thermally insulated chamber is divided by a partition into two compartments of equal volume. The left side contains $9.00 \times 10^{23}$ helium atoms, and the right side contains \(2.70 \times...
If $1.00 \mathrm{~mol}$ of an ideal monatomic gas initially at $72 \mathrm{~K}$ absorbs $100 \mathrm{~J}$ of thermal energy, what is the final temperature? Assume the volume does not change.
A constant-volume encasement vessel surrounds a liquidnitrogen bath that has cooled $1.00 \mathrm{~mol}$ of a monatomic ideal gas to $77.2 \mathrm{~K}$. This system is initially in thermal...
Consider four charged particles placed at the corners of a square whose sides have length $d$. Particles 1,2 , and 4 carry identical positive charges. In order for the vector sum of the forces...
The comparative financial statements of Automotive Solutions Inc. are as follows. The market price of Automotive Solutions Inc. common stock was $119.70 on December 31, 20Y8. Instructions Determine...
The unadjusted trial balance of Secretarial Services is as follows: SECRETARIAL SERVICES Unadjusted Trial Balance as at 31 December 2017 Account Debit Credit Cash at bank Office supplies Prepaid...
Identify the five components of a data communications system.
What is the maximum number of characters or symbols that can be represented by Unicode?
What are the three criteria necessary for an effective and efficient network?
1. There are missing parts in the program below and fix the bugs: isJavaFun = true; = is Fish Tasty false; System.out.println("Is Java Fun' is JavaFun); System.out.println("Is Fish TASTY" isFish...
Write regular expressions in Java for the following: Strings between10and20characters (inclusive) which have odd lengths. The allowed characters here are not specified, and should be considered...
These containers are available in four sizes: huge, large, medium, and small, which can hold 50, 20, 5 and 1 widgets, respectively. The cost of each of the containers, at this time, is $35.00 (huge),...

Let A = {R, S| R and S are regular expressions and L(R) L(S)}. Show that

Question:

Step by Step Answer:

If we would like to prove fn 6 Ogn ...View the full answer

Introduction to the theory of computation

Students also viewed these Computer science questions