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Subject

Theory of Computation

This course presents a study of Finite State Machines and their languages. It covers the details of finite state automata, regular expressions, context free grammars. More, the course includes design of the Push-down automata and Turing Machines. The course also includes basics of undecidability and intractability.

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HamroCSIT User
Define Turing machine as enumerators of strings of a language. Encode the Turing machine TM = ({q0, q1, q2} , {a, b}, {a, b, B}, δ, q2, B, F) with input w = ba and δ is defined as follows:
δ(q0, b) → (q1, b, R), δ(q1, a) → (q2, a, R), δ(q2, a) → (q1, a, R), δ(q2, b) → (q2, b, L)
Not Answered Fourth Semester Asked on 2081 Exam
HamroCSIT User
Describe the extended transition function of NFA. Construct a NFA, using transition table and transition diagram , over  {0, 1} that accept the string having substring 01 and ends with 1. Show the acceptance of 0111.
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
Construct a PDA that accepts string over Σ ={a,b} that contains equal number of a’s followed by equal number of b’s. Show acceptance of aabb and aab.
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
Differentiate Kleen closure from positive closure. Compute positive and Kleen closure of {ab}.
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
How conversion of PDA to CFG done ? Illustrate with example.
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
What is intractability? Define time and space complexity of turing machine.
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
Construct regular expression over {1,2,….9} that represents

  1. strings of even numbers with length 4 starting with 2 and ending with 8.
  2. strings starting with odd numbers and ending with even numbers.

 

Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
Describe how multi-stack TM is different from the semi-infinite tape TM?
Not Answered Fourth Semester Asked on 2080(new) Exam
HamroCSIT User
Define CFG. Construct a CFG that generates the language of all palindromes over {a,b} that do not contain the substring aa. Show the leftmost derevation and construct the equivalent parse tree for string babbbab.
Not Answered Distributed Networking Asked on 2080(new) Exam
HamroCSIT User
How Turing Machine is used as a computing function? Construct a TM for simulating a function f(x) = 2x for x = {1}. Itetrate the TM for input 11 and generate the output 1111.
Not Answered Fourth Semester Asked on 2080(new) Exam
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