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<p>Other studies might define an inverse function of one where m is set to a constant, such that the inverse applies to a particular row.</p>

<p>The inverse of the Ackermann function is primitive recursive, since it is graph primitive recursive, and it is upper bounded by a primitive recursive function.</p>

<p><big>Usage</big></p>
<p><big> In computational complexity </big></p>
<p>The Ackermann function appears in the time <a href="page.php?w=computational_complexity_theory">complexity</a> of some <a href="page.php?w=algorithm">algorithm</a>s, such as <a href="page.php?w=vector_addition_system">vector addition system</a>s</p><p>
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