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<p>;Turing completeness<br/>
: A computational system that can compute every Turing-<a href="page.php?w=computable_function">computable function</a> is called Turing-complete (or Turing-powerful). Alternatively, such a system is one that can simulate a <a href="page.php?w=universal_Turing_machine">universal Turing machine</a>.;Turing equivalence<br/>
: A Turing-complete system is called Turing-equivalent if every function it can compute is also Turing-computable; i.e., it computes precisely the same class of functions as do <a href="page.php?w=Turing_machine">Turing machine</a>s.</p><p>
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