Question: Let 2 = { < > | | ( ) | = 2 } be a TM . In other words, 2 consists of all

Let 2={<>||()|=2} be a TM. In other words, 2 consists of all encodings of
Turing machines that accept exactly 2 strings. Show that 2 is undecidable. (hint: you can
use the reduction strategy).

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Q:

Let L 2 = { | M | L ( M ) | = 2 } be a TM . In other words, L 2 consists of all encodings of Turing machines that accept exactly 2 strings. Show that L 2 is undecidable. ( hint: you can use the...

Q:

Answer the questions numbers 3.1, 3.2, 3.4, 3.5, 3.6, 3.7, 3.8 186 CHAPTER 3 / THE CHURCH-TURING THESIS The following is a high-level description of a TM M that decides A. M = "On input G), the...

Q:

4. (a) Show that 1-tape Turing Machines and 3-tape Turing Machines are equivalent. That is, show: (i) for any 1-tape Turing Machine M, there exists a 3-tape TM Turing Machine S such that M(x) and...

Q:

1b. The problem of determining whether a DFA accepts at least one string. Note that we do not care which string it accepts as long as it accepts at least one string. 1c. The problem of determining...

Q:

1b. The problem of determining whether a DFA accepts at least one string. Note that we do not care which string it accepts as long as it accepts at least one string. 1c. The problem of determining...

Q:

7. Let M represent a single-tape deterministic Turing machine. Let L = {(M): M either accepts or rejects every input}. That is, L consists of all encodings of Turing machines that do not enter into...

Q:

1. Design a Turing machine which recognizes the language consisting of all strings of Os whose length is a power of 2. i.e., it decides the language L = {0?" | n 20;. recognizes the language 2....

Q:

All references are to the 1997 edition of Cohen. 1. Problem 6(ii) on page 454. 2. Build/design a TM that accepts all words of the form aba(c)+bab, loops forever on all words that start with b, and...

Q:

Only answer if you are 100% sure(Just tell me the right choice) Suppose a problem P1 reduces to a problem P2. Which of the following statements can we conclude to be TRUE based on the above? a) If P2...

Q:

Lab 5: Tape for a Turing Machine (Doubly-linked List) This lab is another relatively short exercise in which you will code part of an existing project. In this case, you will be working with a...

Q:

The random variable x represents the number of girls in a family of 3 children. Find the mean, variance, and standard deviation for the random variable x. Also, use the range rule of thumb (from...

Q:

Briefly answer the following questions: 1. Define the term functional dependency. 2. Why are some functional dependencies called trivial? 3. Give a set of FDs for the relation schema R(A,B,C,D) with...

Q:

Under composite depreciation, when an asset is sold: Group of answer choices Only loss is recorded No gain / loss is recorded Gain / loss is recorded Depreciation is reversed

Q:

Solve the following equations for x,showing each step on a separate line. Check your answers.a) 5x - 3x = 8b) 5x - 3 = 8c) 5x - 3 = 8xd) 2x - 11 = 4-xe) 2x - 11 = 4+*f) 2x + 11 = 4 + xg) 7x 6 = 18 +...