What are the variants of Turing machine?
Variation of Turing Machine
- Multiple track Turing Machine:
- Two-way infinite Tape Turing Machine:
- Multi-tape Turing Machine:
- Multi-tape Multi-head Turing Machine:
- Multi-dimensional Tape Turing Machine:
- Multi-head Turing Machine:
- Non-deterministic Turing Machine:
What is K tape Turing machine?
Formal Definition. A k-tape Turing Machine is M = (Q,Σ,Γ, δ, q0,qacc,qrej) where • Q is a finite set of control states • Σ is a finite set of input symbols • Γ ⊇ Σ is a finite set of tape symbols.
Can a Turing machine stay?
Turing Machine with Stay option: If instead of moving left or right on seeing an input, the head could also stay at one position without moving anywhere i.e. f: Q × X –> Q × X × {Left_shift, Right_shift, Stay}. Still the number of languages accepted by turing machine remains same .
What is an offline Turing machine?
Offline Turing Machine An offline Turing machine is a multitape Turing machine whose input tape is read only (writing is not allowed). An offline Turing machine can simulate any Turing machine A by using one more tape than Turing machine A.
What is multi dimensional Turing machine?
A multidimensional Turing machine has a multidimensional “tape;” for example, a two-dimensional Turing machine would read and write on an infinite plane divided into squares, like a checkerboard. A three-dimensional Turing machine might have possible directions {N, E, S, W, U, D}, and so on.
What is the difference between the multi-tape and multi track Turing machine?
A multi-tape Turing machine is like an ordinary Turing machine with several tapes. Each tape has its own head for reading and writing. A Multi-track Turing machine is a specific type of multi-tape Turing machine. In a standard n-tape Turing machine, n heads move independently along n tracks.
Which is more powerful single tape turing machine or multi tape Turing machine?
Explanation: The multitape turing machine model seems much powerful than the single tape model, but any multi tape machine, no matter how many tapes, can be simulated by single taped TM.
Is Turing machine powerful than PDA?
Turing machines are indeed more powerful than regular PDAs. However in special case of a PDA with two stacks (TPDA or 2-PDA) the TPDA is equally powerful than a turing automata. And thus the TPDA can simulate the work of a Turing machine, and they are equivalent.
Can a Turing machine not move?
False. A Turing machine that can’t move left can never write information on the tape, then go back to read it later. In other words, it can’t store any information; it has no memory apart from its state. This makes it into a finite state machine, which is significantly weaker than a Turing machine.
What is semi infinite tape?
A Turing Machine with a semi-infinite tape has a left end but no right end. The left end is limited with an end marker. It is a two-track tape − Upper track − It represents the cells to the right of the initial head position.
What is universal Turing machine in automata?
In computer science, a universal Turing machine (UTM) is a Turing machine that simulates an arbitrary Turing machine on arbitrary input. The universal machine essentially achieves this by reading both the description of the machine to be simulated as well as the input to that machine from its own tape.
