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Is a four-tape Turing Machine more powerful than a two-tape Turing Machine? Explain why

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Answer #1

Yes.

Take the language {anbncndn | n >= 0}

Using 4 tape turing machine using, gotta move from first to last to once and on each tape we write each symbol while traversing. Then will move once from last to once to see if they are same in number.

Using 2 tape, gotta traverse at least 6 times and one for each of b, c and d to compare with a.

So, 4-tape is better.

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Is a four-tape Turing Machine more powerful than a two-tape Turing Machine? Explain why Is a four-tape Turing Machine more powerful than a two-tape Turing Machine? Explain why
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