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<p>a halt). So any such language is not Turing-complete. For example, a language in which programs are guaranteed to complete and halt cannot compute the computable function produced by <a href="page.php?w=Cantor%27s_diagonal_argument">Cantor's diagonal argument</a> on all computable functions in that language.</p>

<p><big>Turing oracles</big></p>
<p>A computer with access to an infinite tape of data may be more powerful than a Turing machine: for instance, the tape might contain the solution to the <a href="page.php?w=halting_problem">halting problem</a> or</p><p>
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