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<p>containment problem.</p>

<p><big>Function problems</big></p>
<p>A similar situation exists between the functional classes <a href="page.php?w=FP_%28complexity%29">FP</a> and <a href="page.php?w=Sharp-P"></a>. By a generalization of <a href="page.php?w=Ladner%27s_theorem">Ladner's theorem</a>, there are also problems in neither FP nor <a href="page.php?w=Sharp-P-complete"></a> as long as FP != #P. As in the decision case, a problem in the #CSP is defined by a set of relations. Each problem takes a <a href="page.php?w=Boolean_logic">Boolean</a> formula</p><p>
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